2017届北京市高考英语一轮复习综合练习：26 （含解析）_高考复习指南

　　64．What is the function of the “ proteinase inhibitors ” in tomato plants ?

　　A．They create nutritional matter

　　B．They produce electrical signals

　　C．They protect the plant from insects

　　D．They cure diseases by changing chemicals

　　65．The researchers discovered that ___________

　　A．the alarm was increased by chemical messengers

　　B．the wounded leaf raised danger signals by tiny currents

　　C．the whole plant was aware of the risk through different signals

　　D．proteinase inhibitors expanded the warning to the plant’s surface

　　66．What question do scientists hope to answer with further research ? _________

　　A．Do plants send chemical messengers that register pain ?

　　B．Do plants create cell tissues that help rebuild the leaves ?

　　C．Do plants create proteinase inhibitors that warn them of danger ?

　　D．Do plants send electrical signals that tell them it is time to grow ?

　　67．The best title of this passage is ______

　　A．Electrical Tomatoes

　　B．Endless Cycles of Plants

　　C．A Debatable Research

　　D．A Magic Role of Caterpillars

　　You Can’t Do It Even If It Hurts Nobody

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