Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

In the United States, almost everyone, at one time or another, has been a volunteer. According to U.S. government statistics, about one-fifth of the American population does volunteer work each year. Americans have had the tradition of volunteering and helping one another since the early days of the country.

Americans volunteer not because they are forced or paid to do it. They enjoy it! Traditional volunteer activities include raising money for people in need, cooking and giving food, doing general labour (such as clean-up projects and home repair), providing transportation (such as giving rides to the elderly), and tutoring/mentoring young people.

28.   What percentage of American population does volunteer work?

A. 1/4                               B. 1/2                               C.  1/5                               D.  1/3

29.   How long have Americans had the tradition of volunteering?

A.     They have never had.                                         B. since the early daysof the country.

C.  less than 50 years.                                               D. since the Independence Day.

30.   Which activity is NOT a traditional volunteer activity in the United States?

A.     raising money                                                      B. cooking meals

C.  teaching young children                                    D. donating blood

31.   What does the phrase “people in need” mean?

A.     People need help.                                                B. People are rich.

C.  People are poor.                                                  D. People are disable.

32.   According to the passagewhich statement is TRUE?

A.     Traditional volunteer activities include raising money and providing care for animals.

B.     Americans volunteer because they are paid for it.

C.     A few American people do volunteer work.

D.     American people enjoy volunteering.

Exercise 12.Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

In the future, people will build houses on the moon. The best place for houses in a moon town will be underground. Underground houses will be safe, and the temperatures will not be very high during daytime and not very low at night.

Moon homes may be balloons with oxygen, and people will wear oxygen masks when they are away from home because the moon has no air around it. The house might have beds, tables, and chairs, so people will sleep, eat, and work in their home. Moon-house building will be easy.

96. In a moon town, what is the best place for house?

A. a balloon               B. on the ground                C. underground              D. in the air

97. Which of the following is true?

A. The people on the moon will not leave their homes.

B. The people on the moon will wear oxygen masks when they leave their homes.

C. The moon homes are very hot during daytime.

D. The temperatures will be very high during daytime and very low at night.

98. Why do people need oxygen when they stay on the moon?

A. Because the moon is too large.

B. Because the moon houses are full of air.

C. Because people sleep, eat, and work outside their houses.

D. Because the moon has no air.

99. How comfortable are the houses on the moon?

A. They have furniture for people to sleep, eat, or work.

B. They have many balloons.

C. They don't have any furniture.

D. They have all kinds of furniture.

100.In the writer's opinion, will people build houses on the moon?

A. No, they can't.                            B. They might not do it.

C. Of course, they will.                   D. People only think so.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

The word "They" in paragraph 2 refers to ______.

A. human-related effects

B. some species

C. low birthrates

D. natural obstacles

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

Which of the following can result from the loss of one species in a food chain?

A. The connections among the creatures in the food chain become closer.

B. Larger predators will look for other types of prey.

C. There might be a lack of food resources for some other species.

D. Animals will shift to another food chain in the community.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

The word “they” in the last paragraph refers to _______.

A. today’s musicians

B. Scott Joplin and Bessie Smith

C. the musicians’ music

D. the names of the earliest African-American singers

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

The word “they” in the last paragraph refers to _______

A. today’s musicians

B. Scott Joplin and Bessie Smith

C. the musicians’ music

D. the names of the earliest African-American singers

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

The word “they” in the last paragraph refers to _______.

A. today’s musicians

B. Scott Joplin and Bessie Smith

C. the musicians’ music

D. the names of the earliest African-American singers

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.

What is the main idea of the last paragraph?

A. Gerontologists have controlled the process of aging. 

B. Gerontologists are working hard to help people live longer and more healthily. 

C. Gerontologists are trying to give people an eternal life. 

D. Gerontologists are now able to slow down the process of aging.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

The word "inconsequential" in paragraph 1 is closest in meaning to ______.

A. unimportant

B. unavoidable

C. unexpected

D. unrecognizable