It is a complex tale, and it may be happening in more plant species than tomatoes. It may also be happening with more chemical signals that are still unknown to us. Further studies are needed to increase agricultural efficiency.
人们倾向于认为植物是大自然的装饰品。它们不能移动,不能发出声响,看起来不对任何事情作出反应。但是情况常常并非如此,植物一直都在说话。
1.How do plants warn their neighbors?
A.They make use of winds.
B.They release some chemicals.
C.They identify the chemicals.
D.They are exposed early.
答案:B
考查细节理解。根据第二段中的“scientists have reported that
different types of plants, from trees
to
tomatoes, release compounds (化合物) into the air to help neighboring plants”可知,不同种类的植物通过释放一些化合物进而帮助附近的植物,即B项正确。
2.What's the function of HexVic?
A.It damages the cutworm's body.
B.It shows up more.
C.It cures the disease.
D.It sprays over healthy plants.
答案:A考查推理判断。根据倒数第二段中的“When the scientists fed HexVic to cutworms, it knocked down their survival rate by
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