actual advantage chance child difficult difference few hear many possible silence tell

Do you believe a rose plant says "I want some water" or a tree shouts "My arms hurt"？Maybe you will say this could only happen in some（1）

children's

children's

stories.
    In fact，plants are not always（2）

silent

silent

.A recent study has found plants shout when they are in need of water or having their stems cut."Even in a quiet field，there are（3）

actually

actually

some sounds that carry information.However，microphone the pitch（音高） is too high for people（4）

to hear

to hear

，" said Lilach Hadany，a professor from Tel Aviv University.
    The researchers used microphones to record some tomato plants and found that stressed plants send out（5）

more

more

sounds than unstressed plants."When tomatoes are not stressed at all，they are very quiet，" Professor Hadany said.They also trained a machine in（6）

telling

telling

the differences between thirsty plants and cut plants.The result shows that when the causes of stress change，they shout（7）

differently

differently

.After the team recorded many kinds of other plants，they found that many plants like corn，wheat and grape plants send out sounds when they are under stress，too.
    "There is a（8）

possibility

possibility

that a lot of communication is happening，" Professor Hadany said. "Because other plants can probably hear the call of the stressed plants."
    Sound recordings of plants could bring humans lots of（9）

advantages

advantages

，especially in farming.For example，people will make sure whether corn is getting enough water or where water is needed most without much（10）

difficulty

difficulty

.