Teks Explanation 1
Recycling is a collection, processing, and reuse of materials that would
otherwise be thrown away. Materials ranging from precious metals to broken
glass, from old newspapers to plastic spoons, can be recycled. The recycling
process reclaims the original material and uses it in new products.
In general, using recycled materials to make new products costs less and
requires less energy than using new materials. Recycling can also reduce
pollution, either by reducing the demand for high-pollution alternatives or by
minimizing the amount of pollution produced during the manufacturing process.
Paper products that can be recycled include cardboard containers, wrapping
paper, and office paper. The most commonly recycled paper product is newsprint.
In newspaper recycling, old newspapers are collected and searched for
contaminants such as plastic bags and aluminum foil. The paper goes to a
processing plant where it is mixed with hot water and turned into pulp in a
machine that works much like a big kitchen blender. The pulp is screened and
filtered to remove smaller contaminants. The pulp then goes to a large vat
where the ink separates from the paper fibers and fl oats to the surface. The
ink is skimmed off, dried and reused as ink or burned as boiler fuel. The
cleaned pulp is mixed with new wood fibers to be made into paper again.
Experts estimate the average office worker generates about 5 kg of wastepaper
per month. Every ton of paper that is recycled saves about 1.4 cu m (about 50
cu ft) of landfill space. One ton of recycled paper saves 17 pulpwood trees
(trees used to produce paper).
1. The following things can be recycled, EXCEPT….
A. Precious metals
B. Broken glass
C. Old newspapers
D. Plastic spoons
E. Fresh
vegetables and fruits
2. Which of the following is NOT the benefit of recycling?
A. It costs much money for the process of recycling
B. It costs less to make new products
C. It requires less energy
D. It can reduce pollution
E. It
reduces the demand for high-pollution alternatives
3. What is the third step of recycling paper products?
A. Collect and search for contaminants such as plastic bags and aluminium foil
B. Mix the paper with hot water in a blender which turns it into pulp
C. Screen
and filter the pulp to remove smaller contaminants
D. Put the pulp to a large vat to separate the ink from the paper fibres
E. Mix the pulp with new wood fibres to be made into paper again
4. We can make use of the ink after being separated from the paper fibres by
doing the followings, EXCEPT….
A. Skim it off
B. Dry it
C. Reuse as ink
D. Burn as boiler fuel
E. Mix it
with the pulp
Teks Explanation 2
Human body is made up of countless millions of cells. Food is needed to built
up new cells and replace the worn out cells. However, the food that we take
must be changed into substances that can be carried in the blood to the places
where they are needed. This process is called digestion.
The first digestive process takes place in the mouth. The food we eat is broken
up into small pieces by the action of teeth, mixed with saliva, a juice
secreted by glands in the mouth. Saliva contains digestive juice which moisten
the food, so it can be swallowed easily.
From the mouth, food passes through the esophagus (the food passage) into the
stomach. Here, the food is mixed with the juices secreted by the cells in the
stomach for several hours. Then the food enters the small intestine. All the
time the muscular walls of the intestine are squeezing, mixing and moving the
food onwards.
In a few hours, the food changes into acids. These are soon absorbed by the
villi (microscopic branch projections from the intestine walls) and passed into
the bloodstream.
5. What is the text about?
A. The
digestive system
B. The digestive juice
C. The method of the digestive system
D. The process of intestine work
E. The food substances
6. How can we swallow the food easily?
A. The food changes into acids absorbed by the villi.
B. The food
must be digested first through the process.
C. The food is directly swallowed through esophagus into the stomach.
D. The food is mixed with the juices secreted by the cells in the stomach.
E. The food we take must be changed into substances carried in the blood to the
places.
7. From the text above, we imply that ….
A. a good
process of digestive system will help our body becoming healthier.
B. no one concerned with the process of digestive system for their health.
C. the digestive system is needed if we are eating the food instantly.
D. every body must conduct the processes of digestive system well.
E. the better we digest the food we eat, the healthier we will be.
8. “Human body is made up of countless millions of cells.” (Paragraph 1) The
phrase “made up” means ….
A. produced
B. managed
C. arranged
D. completed
E.
constructed
Teks Explanation 3
Have you ever wondered how people get chocolate from? In this article we’ll
enter the amazing world of chocolate so you can understand exactly what you’re
eating.
Chocolate starts with a tree called the cacao tree. This tree grows in
equatorial regions, especially in places such as South America, Africa, and
Indonesia. The cacao tree produces a fruit about the size of a small pine
apple. Inside the fruit are the tree’s seeds, also known as cocoa beans.
The beans are fermented for about a week, dried in the sun and then shipped to
the chocolate maker. The chocolate maker starts by roasting the beans to bring
out the flavour. Different beans from different places have different qualities
and flavor, so they are often sorted and blended to produce a distinctive mix.
Next, the roasted beans are winnowed. Winnowing removes the meat nib of the
cacao bean from its shell. Then, the nibs are blended. The blended nibs are
ground to make it a liquid. The liquid is called chocolate liquor. It tastes
bitter. All seeds contain some amount of fat, and cacao beans are not
different. However, cacao beans are half fat, which is why the ground nibs form
liquid. It’s pure bitter chocolate.
9. The text is about …
A. the cacao tree
B. the cacao beans
C. the raw chocolate
D.
the making of chocolate
E. the flavour of chocolate
10. The third paragraph focuses on …
A. the
process of producing chocolate
B. how to produce the cocoa flavour
C. where chocolate comes from
D. the chocolate liquor
E. the cacao fruit
11. ” …, so they are often sorted and blended to produce …” (Paragraph 3.)
The word “sorted “is close in meaning to …
A. arranged
B. combined
C. separated
D. distributed
E. organized
12. How does the chocolate maker start to make chocolate?
A. By fermenting the beans.
B. By
roasting the beans
C. By blending the beans.
D. By sorting the beans.
E. By drying the beans
Teks Explanation 4
What is photosynthesis? Photosynthesis is a food-making process that occurs in
green plants. It is the chief function of leaves. The word photosynthesis means
putting together with light. Green plants use energy from light to combine
carbon dioxide and water to make sugar and other chemical compounds.
How is the light used in photosynthesis?
The light used in photosynthesis is absorbed by a green pigment called
chlorophyll. Each food-making cell in a plant leaf contains chlorophyll in
small bodies called chloroplasts. In chloroplast, light energy causes water
drawn form the soil to split into hydrogen and oxygen.
What are the steps of photosynthesis process? Let me tell you the process of
photosynthesis, in a series of complicated steps, the hydrogen combines with
carbon dioxide from the air, forming a simple sugar. Oxygen from the water
molecules is given off in the process. From sugar together with nitrogen,
sulphur, and phosporus from the soil-green plants can make starch, fat,
protein, vitamins, and other complex compounds essential for life.
Photosynthesis provides the chemical energy that is needed to produced these
compounds.
13. What step after the hydrogen combines with carbon
dioxide from the air …
A. Photosynthesis provides the chemical energy that is needed to produced these
compounds.
B. Water drawn form the soil to split into hydrogen and oxygen.
C. Food-making process that occurs in green plants.
D. Phosporus from the soil-green plants can make starch, fat, protein,
vitamins, and other complex compounds essential for life.
E.
Oxygen from the water molecules is given off in the process.
14. What are photosynthesis need …
A. Water, light, oxygen, worm
B. Soil, chlorophyll, sun, human
C. Bug, air, oxigen, food
D. Light,
Carbon dioxide, humus
E. Candle, vitamins, hydrogen
15. What the product of photosynthesis …
A. Sugar
B. Food and
O2
C. Root
D. Food
E. Branch
16. What kind of the text …
A. Narrative text
B. Hortatory text
C. Descussion text
D.
Explanation text
E. Descriptive text
Teks Explanation 5
Biodiesel is a clean burning substitute for petroleum based diesel fuel.
Biodiesel is made of vegetable oil.
To make or manufacture Biodiesel, you must first start with raw materials. The
raw materials needed in the production of Biodiesel are a small amount of
methanol and a ready supply of vegetable product. One of the most common
vegetables used in the production of Biodiesel is corn, although depending on
the geographic location of the manufacturing facility many other plants are
used as well (rapeseed, soybeans, flaxseed, etc.). The first step is to use the
raw vegetable product to make vegetable oil. Vegetable oil by itself will not
be what you need to power a car, from here it has to be processed into
Biodiesel.
The process for converting vegetable oil into Biodiesel is sometimes called
ester interchange. To complete this process the vegetable oil has to be
combined with a smaller amount of methanol and then put in the presence of a
small quantity of an alkaline catalyst (for example, 5% to 1% sodium
hydroxide). Vegetable oil is made up of so-called triglycerides, which is a
compound of the trivalent alcohol glycerin with three fatty acids. The goal of
ester interchange is to separate the glycerin molecule from the three fatty
acids and replace it with three methanol molecules. This process then yields
roughly 90% Biodiesel and 10% of a glycerin byproduct. The glycerin byproduct
can be used in a number of other chemical processes for different industries.
17. What is the text about?
A.
The process of making Biodiesel
B. The use of the Biodiesel.
C. The advantage of using the Biodiesel.
D. The benefit of producing the Biodiesel.
E. The development of the Biodiesel product.
18. What are interchanged in the process of ester interchange?
A. The three fatty acids with the glycerin molecules.
B. The
glycerin molecule with three methanol molecules
C. Methanol with the three fatty acids.
D. Vegetable oil with methanol
E. Methanol and alkaline catalyst.
19. According to the text, one of the advantages in using biodiesel is…
A. it is cheap.
B. it only uses vegetable oil.
C. it uses replaceable materials.
D. it can be done in small industry.
E. it gives
less pollution than petroleum
20. “The process for converting vegetable oil…”(Paragraph 3). The word
“converting” is closest in meaning to…
A. Producing
B. Separating
C. Attaching
D. Processing
E. Changing
Teks Explanation 6
A natural disaster is a terrible accident, e.g. a great flood, a big fire or an
earthquake. It usually causes great suffering and loss of a large sum of money.
The casualties are injured or died. Some people are homeless and need medical
care.
Floods occur when the water of rivers, lakes, or streams overflow their banks
and pour onto the surrounding land. Floods are caused by many different things.
Often heavy rainstorms that last for a brief can cause a flood. But not all
heavy storms are followed by flooding. If the surrounding land is flat and can
absorb the water, no flooding will occur. If, however, the land is hard and
rocky, heavy rain cannot be absorbed. Where the banks are low, a river may
overflow and flood adjacent lowland.
In many part of the world flood are caused by tropical storms called hurricanes
or typhoons. They bring destructive winds of high speed, torrents of rain, and
flooding. When a flood occurs, the destruction to surrounding land can be
severe. Whole villages and towns are sometimes swept away by water pouring
swiftly over the land. Railroad track blocked and uprooted from their beds.
Highways are washed away.
When a building caught fire, the firemen pitched in to help battle the blaze.
Before the pumps were invented, people formed bucket brigades to fight fires.
Standing side by side, they formed a human chain from the fire to nearby well
or river. They passed buckets of water from to hand to be poured on the flames.
The damage of the fire did depend a great deal on where it happened. In the
country or a small village, only a single house might burn down. But in crowded
cities, fire often destroyed whole blocks and neighborhoods before being
controlled.
21. What can possibly prevent rivers and lakes from overflowing?
A. An absorbent bed.
B. A rocky surrounding.
C. A low land.
D. A high
bank
E. A high road.
22. We know from the text that . . . .
A. River can sweep heavy flood
B. People can make money from flood
C. The destruction by flood is always less severe
D. Water
flood is absorbed by land
E. Typhoons caused heavy flood
23. We know from the text that . . . .
A. The pump is the only tool used by fire fighters now
B. The pump
helps people to fight fires more efficiently
C. Fires in big cities are always very big
D. People no longer use buckets to control fire
E. Only firemen can control fires in crowded cities
Teks Explanation 7
The sense of taste is one of a person’s five senses. We taste with the help of
taste-buds in the tongue.
There are four main kinds of taste: sweet, sour, salty, and bitter. All other
tastes are just mixtures of two or more of these main types.
The surface of the tongue has more than fifteen thousand taste-buds (or cells).
These are connected to the brain by special nerves which send the so-called
‘tastes messages.
When the tongue comes into contact with food of any kind, the taste-buds will
pick up the taste. The nerves then send a message to the brain. This will make
us aware of the taste. All this happens in just a few seconds.
There are four kinds of taste-buds, each of which is sensitive to only a
particular taste. These four groups are located in different parts of the
tongue.
The taste-buds for salty and sweet tastes are found round the tip of the tongue
and along its sides. Sour tastes can be picked up only at the sides of the
tongue. The taste-buds of the bitter taste are found at the innermost edge of
the tongue. There are taste-buds at the centre of the tongue.
The senses of smell and sight can affect taste. The good smell of food
increases its taste. Similarly, attractive colours can make food appear tastier
and more delicious. If food does not smell good or is dull-coloured, it will look
tasty and may not taste good at all.
Very hot or cold sensations can make the taste-buds insensitive. Food that is
too hot or too cold, when placed in the mouth, will have no tastes at all.
24. We can taste any kind of food because of ……..
A. the good smell of food
B. the four main kinds of taste
C. the
taste-buds in the tongue
D. the senses of smell and sight
E. the taste-buds round the tip of the tongue
25. When we eat very hot or cold food ……..
A. the food
will lose its taste
B. the food won’t smell good
C. the taste of the food increases
D. the taste-buds will be sensitive
E. the taste-buds will be very, responsive
26. The senses of smell and sight ……..
A. increase the taste of the food
B. affect
the taste of the food
C. make food more delicious
D. make the food look good
E. make the food attractive
27. The purpose of the text is ……..
A. to
explain how we can taste any food in the mouth
B. to give a report about the sense of taste
C. to inform how important the tongue is
D. to describe the use of the tongue
E. to tell the taste of the food
eks Explanation 8
A cell phone is a great gadget in this modern world. What is a cell phone? A
cell phone is actually a radio in certain way. Like a radio, by a cell phone we
can communicate to other people in real time. Million people use cell phone for
their communication. Even nowadays, people use cell phones to communicate in
voice, written and data. Alexander Graham Bell is the person who make great
change in the way people communicate to each other. He invented a telephone in
1876. While wireless radio was formally known in 18994 presented by Guglielmo
Marconi. By these two technologies, then a cell phone was born. However do you
know how actually cell phones work?
This short explanation on how a cell phone work is really wonderful. A cell
phone or in long term “cellular telephone’ works by transmitting signals of
radio to towers of cellular. The towers are networked to a central switching
station. The connection usually uses wire, fiber optic-cables, or microwave.
Then the central switching station which handles calls in certain given area is
directed connected to the wire-based telephone system. Cellulars are pick up by
the towers and relayed to another cellular telephone user or the user of
wire-based telephone network.
the towers vary in the capacity and capability to receive signals. Some can
receive the signal from short distance and the others can receive more
distance. However, there are usually more than one tower in certain given area
so that the system can handle the increasing telephone traffic.
28. What the main idea of paragraph three …
A. How to use the telephone
B. The founder of telephone
C. The part
of telephone
D. Function of telephone
E. How to make the telephone
29. What is cell phone …
A. Cell phone is an object can movement
B. Cell phone is general object
C. Cell phone is a contraption thing
D. A cell
phone is actually a radio in certain way
E. Cell phone is Graham Bells’ founder
30. How telephone celluler work …
A. By signal radio
B. By battery
C. By user
D. By GPS Signal
E. By
transmitting signal
31. Who the telephone celluler founder …
A. Graham bells
B. Guiglemo Marconi
C. Wilbur O’Wright
D. Antonio
Meucci
E. BJ Habibie
32. What the text about …
A. The telephone founder
B. The part of telephone
C. The
history of telephone
D. How telephone work
E. How much the telephone
33. History … by Ani today
A. Will learn
B. Will
learnt
C. Would learnt
D. Have learnt
E. Has learnt
34. I hadn’t … brookfast when you call me
A. Already
B. Have
C. Done
D. Just
E. Has
35. The car … driven by The person who laughing
A. Will
B. Is being
C. Was being
D. Has been
E. Will be
36. My cat … their fish today
A. Eats
B. Will ate
C. Has eat
D. Eaten
E. Eat
37. Your meal hasn’t been …
A. Finish
B. Finished
C. Finishing
D. Finishes
E. Did
Teks Explanation 9
Silkworms live for only two or three days after laying eggs. About 36,000 to
50,000 eggs are laid, and these are carefully stored at the silkworm farm until
they are ready to hatch. The eggs hatch into caterpillars, which feed on
mulberry leaves. Soon, the caterpillars are ready to spin their cocoons. Not
all caterpillars can spin silk cocoons. Only the caterpillars of a silkworm
moth known as ‘Bombyx mari’ can do such spinning. This caterpillar has special
glands which secrete liquid silk through its lower lip. The liquid produced
later hardens to form tine strands.
The caterpillar makes its cocoons using these strands. The threads on the
outside of the cocoon are rough, while those inside are soft and smooth.
Some fully-spun cocoons are heated. This kills the pupa inside. The cocoons are
then put into hot water to loosen the fine threads. Finally, these threads are
reeled off the cocoons.
The length of unbroken thread produced by a single cocoon measures about
one-and-a-half kilometers. Being twisted together several of these threads make
single woven materials.
38. What is the purpose of the text ……..
A. To persuade readers to buy silk.
B. To put silk into different categories.
C. To entertain readers with the knowledge.
D. To present some points of view about silk.
E. To
describe how silk comes into existence.
39. How are the threads on the outside of the cocoon ……..
A. Fine.
B. Soft.
C. Rough.
D. Strong.
E. Smooth.
40. What are mulberry leaves for ……..
A. Feeding
caterpillars
B. Spinning cocoons.
C. Storing threads.
D. Hatching eggs.
E. Laying eggs.
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