Try to think about this：you sit down and begin to eat a tomato.Suddenly，the tomato starts to scream!This thing would never really happen.But a new study showed that plants make sounds when they are stressed（压力大的）.
Scientists in Israel did the study.They used ultrasonic microphones（超声波麦克风）to record the sounds of tomato plants in boxes.
Three groups of plants were listened to：one group wasn't watered for five days，another group had the stems （茎） cut off，and the third group was untouched.The first two groups made sounds 30 to 50 times every hour.The third group only made the sound once every hour. "When tomatoes are not stressed at all，they are very quiet，" Scientists from the study team told CNN.
The researchers don't know，how the sounds are made，but they believe the noise comes from the breaking of air bubbles in the plants.Scientists also believe that animals and insects may listen to the sounds.For example，the sound can tell them that the plant is stressed and not good for laying eggs on.When an animal wants ta eat plants，it can also use sound to choose which one to eat.
After the experiment，the researchers listened to other plants such as wheat，corn and trees，and found they also made more sounds when stressed.Researchers said the study can help farmers in the future，as they can better take care of the crops（庄稼）by "hearing"how plants feel.
（1）What might we do to let tomatoes make sounds more often？ DD
A．Water them as needed.
B．Plant them at the right time.
C．Give them enough sunlight.
D．Keep them in a very cold place.
（2）According to scientists，by hearing the sounds，animals can CC.
A．feel as stressed as the plants
B．know when to help the plants relax
C．pick out the best plants to use or eat
D．protect themselves from dangerous plants
（3）How can the study help farmers？ AA
A．It can help them grow healthy crops.
B．It can help them stay safe while planting crops.
C．It shows them a way to talk to their crops.
D．It makes it more fun to work in the fields.
（4）Which is the best title for the passage？ BB
A．Healthy crops.
B．Screaming plants.
C．Amazing tomatoes.
D．Clever animals.
【答案】D；C；A；B
【解答】
【点评】
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发布：2024/7/25 8:0:9组卷：15引用：1难度：0.5
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