高考英语冲刺阅读理解训练题（十一）_高考复习指南

　　But researchers insist that science could give nature a fighting chance against both natural and man-made dangers.

　　They hope to answer the critics by stopping the new trees from breeding, so their effect on the environment can be controlled.

　　72．Which kind of tree is not the ones that scientists are planting in the US?

　　A. Trees that worms can't hurt.

　　B. Trees that can protect themselves at a chemical attack.

　　C. Trees that can resist wind better.

　　D. Genetically engineered trees.

　　73．What caused the American scientists to work on special trees?

　　A. They think science could give nature a fighting chance against both natural and man-made dangers.

　　B. Great numbers of trees have been lost due to attacks by viruses.

　　C. Researchers successfully introduced seeds designed to resist the virus.

　　D. Tree genomes are mapped out so scientists know how to improve trees.

　　74．Which of the following was probably the first kind of trees being engineered?

　　A. Papaya. B. Pine. C. Apple. D. Poplar.

　　75．Why did critics think engineered trees dangerous? Because _______.

　　A. these trees can destroy the balance of nature

　　B. everything except trees has been genetically engineered

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