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细胞 n. c_ _ _
- A. Malaria is under attack in a number of countries.
- B. Some types of mosquitoes have become resistant to the current sprays.
- C. New poisons have been put into wide use with the new science.
- D. One of human's challenges is to win the campaigns against mosquitoes.
- A. to save or rescue more than two million people
- B. to reveal the fight between doctors and mosquitoes
- C. to support the WHO's effects in destroying mosquitoes
- D. to kill all malaria-bearing mosquitoes before their resistance becomes too great
- A. The author does not give any reason in the whole passage.
- B. Local governments are not skillful enough to kill mosquitoes.
- C. Current sprays are not powerful enough to kill mosquitoes.
- D. No new poisons have been developed to kill mosquitoes so far.
- A. some countries have not started a campaign against mosquitoes
- B. new species of mosquitoes may survive today's sprays
- C. malaria was once thought to be a very old evil of the world
- D. present sprays are not as effective as people think
- A. rely on their parents to make a life
- B. stay with their parents in order to get an opportunity for higher education
- C. seek the best advice from their parents
- D. have very little in common with their parents
- A. Parents should be more tolerable towards their children.
- B. The younger generation should value the older generation for their wisdom.
- C. The generation gap is partly created by the older generation.
- D. The generation gap should be avoidable in American society.
- A. on all sides
- B. in every direction
- C. near
- D. in existence
- A. Young people like to choose their own lifestyles.
- B. American society is changing very fast.
- C. Parents place high hopes on their children.
- D. Modem education makes them think differently.
- A. most people don't realize how important passports are
- B. passports aren't important once you are in the country you've chosen to visit
- C. passports are simple to obtain through the mail
- D. passports are obtained at the embassy once you enter a country
- A. foreign
- B. 1egal
- C. monetary
- D. illegal
- A few years ago it was fashionable to speak of a generation gap，a division between young people and their elders. Parents complained that children did not show them proper respect and obedience，while children complained that their parents did not understa
- In our upwardly mobile society，parents often expect their children to do better than they did：to find better jobs，to make more money，and to do all the things that they were unable to do. Often，however，the ambitions that parents have for their children are
- Finally，the speed at which changes take place in our society is another cause of the gap between the generations. In a traditional culture，elderly people are valued for their wisdom，but in our society the knowledge of a lifetime may become obsolete overni
- A. the generation gap suddenly appeared
- B. the generation gap is a feature of American life
- C. how people can reduce the generation gap
- D. many critics argue over the nature of the generation gap
- A. passports are more important than visas
- B. visas and passports are the same thing
- C. foreign governments issue visas instead of passports
- D. visas are required to obtain passports
- A. exchanging currency
- B. using a credit card
- C. checking into hotels
- D. all of the above
- A. Which
- B. As
- C. That
- D. Whom
- A. within
- B. at
- C. by
- D. with
- A. convincing
- B. convince
- C. convinced
- D. convinces
- A. have…remove
- B. had…remove
- C. have…removing
- D. have…removed
- A. on
- B. with
- C. for
- D. to
- A. with
- B. to
- C. in
- D. by
- A. Watching over
- B. Watch on
- C. Watched over
- D. Be watched over
- A. three times as larger as
- B. as three times large as
- C. three times as large as
- D. as large as three times
- A. that
- B. what
- C. than
- D. which
- A. situation
- B. occasions
- C. cases
- D. circumstances
