cutwormkilling
HexVic. Researchers confirmed that uninfested plants have to build their own weapons to fight off bugs and disease. How do they know when to play defense? They are warned first by their friendly plant neighbors.
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.
【解题导语】 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。
5.How do plants help their neighbors?
A.They make use of winds.
B.They release some chemicals.
C.They identify the chemicals.
D.They are exposed early.
解析:选B。细节理解题。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。
6.What’s the function of HexVic?
A.It damages the cutworm’s body.
B.It shows up more.
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