We can conclude from Paragraph 5 that______.

A．while pushing asteroids off course nuclear weapons would destroy the world B．asteroids racing across the night sky are likely to hit Earth in the near future C．the worry about asteroids can be left to future generations since it is unlikely to happen in our lifetime D．workable solutions still have to be found to prevent a collision of asteroids with Earth. 此题为多项选择题。

A．it's mere(只不过的)fuss(小题大做)to write so much about the ideas, feelings, and actions of youth B．the author blames the young for being trouble-maker at home C．the author blames the parents for not understanding what their children think and feel D．the trouble in American families is often caused by difference ideas and opinions between parents and children

A．most of the gifted children became white collars B．half of the gifted followed up graduated from all colleges C．each of the talented published at least one article D．bright men got higher income than bright women

A．owls and hawks are tame animals B．hawks and owls are domestic animals C．hawks and owls are flesh-eating animals D．hawks and owls are pet animals

A.is important for meal service B.is a magic C.should be colorful D.should be made only by certain material

A．was often ill B．seldom got ill C．had married another man D．had undergone an operation two years before

A.McDonald ’s designs its menu to suit the local people B.millions of young adults got their first job with McDonald ’s C.the McDonald ’s menu sticks to old-fashioned favorites such as the Big Mac D.the low prices McDonald’s bring tens of millions of people through its doors every day

A．True B．False P C．Not mentioned

A．people in Beijing prefer modern culture to something traditional B．there are usually more culture activities in September than in any other month C．most of the cultural activities in Beijing are for foreign visitors only D．we can enjoy a large variety of cultural activities in Beijing

A．frank B．kind C．hard working D．critical

A．American cities are changing far the worse B．people have different views on American cities C．many people are now moving from American cities D．the population is decreasing in older American cities

A．education is beneficial to mental development B．education protects the braid from shrinking C．education has a protective effect against mental decline D．education affects overall brain structures

A．the American experts working in the refrigerator project are disappointed with China's refrigerator production B．the American researchers are particularly worried about China's over-emission of CFC into the air C．the American researchers in refrigerator technology enjoy their opportunity to work in China D．the American experts sees China as the best place to increase their export of refrigerator technology 此题为多项选择题。

A．Miss Jarvis was devoted to her mother. B．Miss Jarvis knew many important persons. C．Miss Jarvis was very persistent. D．Miss Jarvis's efforts were not in vain.

A．men suffer more from sun's radiation than women do. B．men will be more exhausted than women after a long trip. C．the higher proportion of fat in women's body makes them easier to lose weight. D．an aged man can still exercise his body as he was young.

A．most of the gifted children became white collars. B．Half of the gifted followed up graduated from all colleges. C．Each of the talented published at least one article. D．Bright men got higher income than bright women.

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A．lessen parental guilt but cannot make children feel more loved. B．make children greedy and not crave for parents" attention and love. C．let parents feel less regretful for not having been so strict or ungenerous. D．result in children"s inconsideration for the others, starting from their parents.

A．rack their brains B．overcome difficulties C．take the initiative D．fortify their confidence