首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
We all scream for water when thirsty, but do you know in very hot, dry weather, plants also make 【B1】______ sounds as if they a
We all scream for water when thirsty, but do you know in very hot, dry weather, plants also make 【B1】______ sounds as if they a
admin
2010-06-11
48
问题
We all scream for water when thirsty, but do you know in very hot, dry weather, plants also make 【B1】______ sounds as if they are crying out for help? You see, in a plant stem there are hundreds of water pipes that bring water and【B2】______ from the soil all the way up to the leaves. As the ground【B3】______ dry, it becomes harder and harder for the plants to do this. In【B4】______ draughts, plants have to fight to pull out any water【B5】______ . Scientist Robert Winter has found out that when it is really bad their water pipes snap(绷断) from the【B6】______ like rubber bands. When that happens, the whole plant vibrates(振动)a little. The snapping pipes make noises ten thousand times quieter than a 【B7】______ . Robert knows that healthy,【B8】______ plants are quiet.【B9】______ . 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.【B10】______ .He attaches it to a quiet, healthy plant so that the plant sounds thirty.【B11】______ . They could build traps that imitate crying plants so when the insects buzz in to eat, they won’t buzz out.
【B4】
选项
答案
severe
解析
转载请注明原文地址:https://kaotiyun.com/show/2mKK777K
0
大学英语六级
相关试题推荐
GriffithworkedforafirmthatspecializedineconomicdevelopmentinWashingtonD.C.becausesheneededmoneytopayforherd
Bystating"ThebusinessofAmericaisbusiness"PresidentCoolidgesuggeststhatbusinessisof______toAmericans.According
Accordingtothepassage,scholarsandstudentsaregreattravelersbecause______.Thewriterthinksthatthegrowthofspecia
TheNationalTrustinBritain,togetherwithsimilarvoluntaryorganization,playsanincreasinglyimportantpartinthepreserv
Inancienttimes,OlympicgameswereheldasareligiousfestivaltohonortheGreekgods.Olympicgamesinancienttimesbroug
GriffithworkedforafirmthatspecializedineconomicdevelopmentinWashingtonD.C.becausesheneededmoneytopayforherd
Accordingtothepassage,colorblindnesscanbedangerousincertainoccupationslike______.Accordingtothepassage,insect
Somethingweirdishappeningintheoncemarginalworldofenvironmentalism.Thegreencauseisnolongerth9preserveofwoolly
A、Thenewapartmentischeaper.B、Shelikestolistentotheradio.C、Thepresentoneistooexpensive.D、Sheneedsaquieterpl
Imagineeatingeverythingdeliciousyouwant—withnoneofthefat.Thatwouldbegreat,wouldn’tit?New"fakefat"products
随机试题
急性左心衰竭时需尽快改善
患者,男,26岁。因突然畏寒、高热伴右胸疼痛1天入院,胸部透视,见右中肺有大片浅淡的阴影。住院后经青霉素肌注,3天后体温接近正常,患者尚有轻度咳嗽,咳痰,稍感憋气。目前该患者的护理措施不妥的是
小张应要求李某提供()等文件以供核实。抵押合同生效后,银行对抵押物的权利有()。
工程风险的本质由()、风险事故和损失构成。
施工组织设计技术经济分析的方法是()。
消防设施维护管理包括()。
商业银行可以通过不同的策略来达到营销目的,其中分层营销策略的特点不包括()
下列各项中,应计入企业当期所得税应纳税所得额的是()。
有知名作家要来你所在的铁路派出所进行交流采风活动,为了更好地展示警营风采,做好接待,领导让你负责此次活动,你认为工作的重点是什么?
计算
最新回复
(
0
)