首页
登录
职称英语
Trees do more than make life pleasant; they make life【C1】______ . Trees get
Trees do more than make life pleasant; they make life【C1】______ . Trees get
游客
2024-10-10
6
管理
问题
Trees do more than make life pleasant; they make life【C1】______ . Trees get【C2】______ through their roots and, primarily through their leaves, they 【C3】______ carbon dioxide【C4】______ the air. Then, with the action of sunlight on cells 【C5】 chlorophyll and other materials, chemical reactions 【C6】______ , and oxygen is 【C7】______ . Through photosynthesis, an acre of trees produces enough oxygen to sustain three 【C8】______ .
Eating wood might seem odd,【C9】______ many low calorie breads and other baked goods now include powdered cellulose【C10】______ acts as a bulking agent to help hold the foods together.
Trees have always been green machines,【C11】______ substances that humans【C12】______ to use. The ancient Greeks, for example, treated pain【C13】______ a tea made by boiling willow leaves and bark; a tea modern scientists now know contains silicon, a precursor of acetylsalicylic acid aspirin. For centuries, the Chinese have【C14】______ medicines from the ginkgo tree. More recently, researchers isolated and synthesized the chemical ginkgolide from the tree【C15】______ use in treating asthma, toxic shock and other ills.
【C16】______ scientists unlock the secrets of trees, they 【C17】______ surprising facts. In the early 1980s David Rhoades, a chemical【C18】______ at the University of Washington, Seattle, discovered that trees send unseen signals to each other. When willows are attacked by webworms and tent caterpillars, they【C19】______ a chemical that alerts nearby willows. The neighboring trees respond by pumping more tannin into their leaves, making them more【C20】______ for the insects to digest. [br] 【C5】
选项
A、contain
B、containing
C、contained
D、to contain
答案
B
解析
contain与先行词cell间为主动关系。
转载请注明原文地址:https://tihaiku.com/zcyy/3795251.html
相关试题推荐
Thehouseallocatedtothemwaspleasantand______.A、spaciousB、wideC、sufficien
Thedetectivewasgreetedwithanunpleasantsmellof______airwhenhestepped
HismannerwassopleasantthatBollafeltat______withhimatonce.A、peaceB、la
Sheisa______girl.A、good-natured,pleasant,well-manneredB、well-mannered,go
Treesdomorethanmakelifepleasant;theymakelife【C1】______.Treesget
Treesdomorethanmakelifepleasant;theymakelife【C1】______.Treesget
Treesdomorethanmakelifepleasant;theymakelife【C1】______.Treesget
Treesdomorethanmakelifepleasant;theymakelife【C1】______.Treesget
Treesdomorethanmakelifepleasant;theymakelife【C1】______.Treesget
Treesdomorethanmakelifepleasant;theymakelife【C1】______.Treesget
随机试题
Themorethingsamanisashamedof,______(他就越受人尊敬).themorerespectableheis本
InternetPrivacyWiththerapiddevelopmentofe-com
在图形显示装置(CRT)信息指示部分中的说明中,()亮,表示火灾报警控制器或其
屈肘时,肘横纹尺侧端与肱骨内上髁之间的腧穴是( )。A.尺泽 B.曲泽 C
《传染病防治法》规定应予以隔离治疗的是A:疑似传染病患者 B:甲类传染病患者
关于羊水栓塞的描述,正确的是A.羊水栓塞多发生于子宫收缩乏力的产妇 B.人工破
一、根据所给资料,回答题。 2021年1—2月份,中部地区商品房销售均价相
汉译英:“纸箱;天然木托”,正确的翻译为:()。 A.box;iron
(2019年真题)某企业将一项符合负债定义的现时义务确认为负债,要满足两个条件,
结核病具有诊断意义的坏死是A.梗死 B.干酪样坏死 C.液化性坏死 D.纤
最新回复
(
0
)