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The following text is for questions 1 to 5.
The first step in manufacturing a detergent is making the surfactant ( the ingredient that does not the actual cleaning). Surface can be made from a wide variety of raw materials including petrolium, animal fats, and vegetable oils.
The chemical processes that are involved are quite complicated for example, animal fat may be treated with a serious of difference chemicals an alcohol, hydrogen gas, sulfuric acid, and an alkali to make one surfactant used in modern household detergents. These complicated reaction and the special equipment they call for make detergent much more difficult to manufacture than soap.
The surfactant must be mixed in a cruncher with other chemicals that help it remove dirt more thoroughly and keep the dirt from setting back on cleaned material special bleaches, colony, and stabilizers also be added.

1. With what topic is this passage primarily concerned?
Manufacturing a detergent
How to make detergent are mode
Surfactant made from raw materials
Detergent is quite complicated

2. Why to make detergent are quite complicated?
The chemical processes that are involved
To manufacture soap are difficult
The surfactant must be mixed
Such stabilizers may also be added

3. Which of the following is closest in meaning to the word "complicated" in paragraph 2

4. The word "cruncher" in paragraph 3 means ....
walking stick

5. Which of the following statement is the best supported by this passage?
Surfactant must be mixed
help it remove dirt
special bleach
more difficult to manufacture than soap

The following text is for questions 1 to 5.
Martin Luther King, Jr, well known for his work in civil rights and ffor his man famous speeches, among his moving " I have A Dream" speech. But fewer people known much about King's childhood. M.L as he was called, was born in 1929 in Atlanta, Georgia, at the home of his maternal grandfather, the Reverend A.D Williams, purchased their home on Auburn Avenue in 1909, twenty years before M.L was born. The Reverand Williams, an eloquent speaker, played and important role in the community since so many people live centered around the Church. He allowed his church and home to be used as a meeting place for number of organization dedicated to the education and social advancement of blacks. M.L grew up in these atmosphere, with his home being used as a coomunication gathering place and was no doubt influence by it. M.L.'s childhood was not especially eventful. His father was a minister and his mother was a musician. He was the second off three children, and he attended all black school in a black neighborhood. The neighborhood was not poor, however, Auburn Avenue was the main artery through prosperous neighborhood that had come to symbolize achievement for atlanta's black people. It was area of banks, insurance companies, builder, jewelers, tailors, lawyers, and other black-owned or black operated business and services. Even in the face of Atlanta's segregation, the district thrived Dr. King never fforget the community spirit he had known as child, nor did he forget the racial prejudice that was seemingly insurmountable barrier that kept black from mingling with whites.

6. What is the passage mainly about?
Martin Luther King's childhood
The prejudice that existed in Atlanta
M.L grandfather
The neighborhood King grew up in

7. Accroding to the author black and King's neighborhood were involved in all following EXCEPT ....

8. The word "eloquent" mean most nearly ....

9. According to the author, King was influenced by ....
community spin
black lawyer
his mother
his speeches

10. It can be stated from the passage that M.L. ....
had a difficult childhood
was a good musician as a child
loved to listen to his grandfather's speak
grew up in relatively rich area of Atlanta

The following text is for questions 11 to 15.
According to data obtained from radioactive dating, the oldest rocks found on earth re approximately 500 million to 4 billion years old. Sumilar ages have been determined for meteorites and the rocks gathered from the moon's surface. different methods of arriving at the earth's age generate very similar results. Modern theories about the formation, development, and eventual burning out of stars suggest that the sun is about 5 billion years old. experts contend that the earth and the sun were formed at almost the same time from a cloud of dust and gas resulting ffrom a cosmic explosion. The present rate of expansion of the galaxies can be extrapolated to suggest that, if the universe began with " a ig bang" about 15 billion years ago, an age of 5 billion years for both the earth and the sun can be considered plausible.
Long before radioactive dating was implemented, mythology and oral narratives alluded to a conjecture that the earth was nearly 6,000 years old. The methods of computation based on the analysis of genealogical trees in scant archeological findings provide evidence that can be difficult to date accurately. Today, radioactive dating of particles and whole ojects has rejected this figure of the earth's age as unreliable.
11. What does the passage mainly discuss?
Dating techniques in research
Modern theories and radioactive dating
Research and narratives about the earth's formation
Establishing the earth's age

12. It can be inferred from the passage that radioactive dating is important for estimating the age of ....
all known meteors
all existing planet
the earth
the trees

13. The author of the passage implies that ....
the earth and the sun are of similar origin
the earth and the sun can be explosive
meteorites and the moon have been analyzed
the galaxies are expanding at a substantial rate

14. In line 5, the word "eventual" is closest in meaning to ....

15. With which of the following statements would the author be most likely to agree?
The moon and the sun are 15 billion years old
The moon can be viewed as a meteorite
The formation of galaxies is an on going process
The earth can be dated as far back as 6,000 years

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