首页
登录
职称英语
[originaltext]We all scream for water when thirsty. But do you know in very hot
[originaltext]We all scream for water when thirsty. But do you know in very hot
游客
2023-08-15
52
管理
问题
We all scream for water when thirsty. But do you know in very hot, dry weather, plants also make faint sounds---as if they are crying out for help? You see, in a plant’s stem, there are hundreds of water pipes that bring water and minerals from the soil all the way up to the leaves. As the ground turns dry, it becomes harder and harder for the plants to do this. In severe droughts, plants have to fight to pull out any water available. Scientist Robert Winter has found out that when it is really bad, their water pipes snap from the tension like rubber bands. When that happens, the whole plant vibrates a little. The snapping pipes make noises10,000 times more quiet than a whisper. Robert knows that healthy, well-watered plants are quiet. He also knows that many insects prefer attacking dry plants rather than healthy plants. How do the insects know which are healthy plants and which are not? Robert thinks that the insects may listen for the plants that cry. And then they may buzz in to kill. To test this theory, Robert is using a device that can imitate plant cries. He attaches it to a quiet, healthy plant so the plant sounds thirsty. Then he watches the insects to see if they attack more often than usual. If he is right, scientists could use the insects’ ability against them. They could build traps that imitate crying plants, so when the insects buzz in to eat, they won’t buzz out.
Questions 9 to 11 are based on the passage you have just heard.
9. What do plants do when they are thirsty?
10. What plants do many insects tend to attack?
11. What could scientists do if Robert’s theory proves to be true?
选项
A、They could drive the insects away.
B、They could keep the plants well watered.
C、They could build devices to trap insects.
D、They could make the plants grow faster.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2927583.html
相关试题推荐
[originaltext]Ifyou’recarefulenough,you’llfindthatitiscommonnowad
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]Peter:(19)ThelawontaxisisveryinterestingandIknowinLon
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
[originaltext]Ababyspendsthefirstyearoflifelearningtolisten.(9)A
[originaltext]W:Hi,Scott,haveyouheardaboutDianarecently?M:No,Ihave
[originaltext]W:Hi,Scott,haveyouheardaboutDianarecently?M:No,Ihave
[originaltext]W:Hi,Scott,haveyouheardaboutDianarecently?M:No,Ihave
随机试题
Thismovieisnot______forchildrentosee:itcontainstoomuchviolenceandto
HomeHealthcareNursesTheChildren’sHospit
OneofthebasicingredientsofAmericanpopularcultureisconsumption,and
Globalwarmingisatrendtowardwarmerconditionsaroundtheworld.Partof
违反《安全生产法》规定,施工单位的()未经安全教育培训或者经考核不合格即从事相关
A.狼疮性肾炎 B.急进性肾炎 C.肾炎性肾病 D.Alport综合征
漫画中的超级英雄拥有特别服饰和超人能力,很多被搬上银幕,获得小朋友们喜爱,图1
(2021年真题)某女,85岁,因肺肾阴亏导致潮热盛汗,咽干咳血、眩晕耳鸣,腰膝
(2017年真题)呈扁圆形或扁椭圆形,表面紫红色或紫褐色,平滑有光泽,一端凹陷,
阳光工程公司提出同公司员工李某解除合同,并经双方协商一致,解除了劳动合同。李某在
最新回复
(
0
)