We know from the text that ______.

A . bioterrorism is an engineered threat to human beings B . bioterrorism can be arrested by improving communication C . natural infections and bioterrorism are the same in essence D . the anthrax attacks are more threatening than the outbreak of SARS

A、dedication B、determination C、discipline D、delay

A．some artists' paintings were beautiful, so they were masterpieces B．only art experts could judge they were masterpieces or not, though ugly C．the artists mentioned above were not really art masters. D．some of them were art masters, while others were not.

A．much more complex than B．much more simpler than C．much more beautiful D．the same as

A．hardware configurations are the same B．most computers at present don&39;t support Fortran, Pascal, Lisp, etc. C．application programmers prefer more architectural transparency D．the author doesn&39;t want to develop machine-dependent programming environment

A.Ms Lessing"s writing career took off in her twenties. B.The Golden Notebook was about Ms Lessing’s broken marriage life C.Ms Lessing’s books are involved in social and political issues of her time D.The failure of Ms Lessing’s marriage was due to her devotion to career

A．only come out at night B．often visit people’s houses C．like to find food in rubbish cans D．like to live with people in winter

A、Win 2000 retains few features of the NT 4.0 B、Win 2000 differs a lot from the NT 4.0 C、Win 2000 is the same as the Windows version NT 5.0 D、NT 4.0 and Windows 2000 have almost the same characteristics

A．Iran has the technology of producing Scud missile B．some countries could send long-range missile right after they decide to do so C．Iraq can not become a missile threat to America now D．both A and C

A．American allies began to appreciate unilateralism. B．Americans come to get over some misconceptions. C．the U.S. became the largest power since Rome. D．Americans can achieve its objectives unilaterally.

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．preferred literature to linguistics. B．used to live in the outskirts of the city. C．didn't like reading writers like Updike. D．didn't get along well with her roommates.

A．like willow trees B．enjoy eating fallen leaves C．talk to caterpillars D．send a special vapor

A．they cost less money. B．the politicians themselves are old. C．they are the finest. D．they can help to win the aged voters.

A．temperatures can go from o to 80 degrees B．is snows throughout the year except for summer C．thunderstorms can be seen throughout the year D．it is more windy and rainy in the spring

A．DNA technology should be placed, in the charge of individuals. B．government should assume less control over individuals. C．people need government to protect their DNA information D．old moral precepts should be abolished on human cloning. 此题为多项选择题。

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A．American businessmen do things more quickly than Japanese ones B．American businessmen like to say "Yes" and "No" C．Americans usually say what they are thinking D．Americans do not express themselves clearly

A．there is a clear relationship between inflation and interest rates. B．the economy always follows particular trends. C．the current economic problems are entirely predictable. D．the present economic situation is better than expected.

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．has a Navajo mother and a white father. B．has lifted ideas from other literary works. C．has been suffering from visionary seizures. D．has told a story of his own experience.