首页
登录
职称英语
Vitamins are organic compounds necessary in small amounts in the diet for th
Vitamins are organic compounds necessary in small amounts in the diet for th
游客
2025-05-05
4
管理
问题
Vitamins are organic compounds necessary in small amounts in the diet for the normal growth and maintenance of life of animals, including man.
They do not provide energy,【21】 do they construct or build any part of the body. They are needed for【22】 foods into energy and body maintenance. There are thirteen or more of them, and if【23】 is missing a deficiency disease becomes【24】
Vitamins are similar because they are【25】 of the same elements--usually carbon, hydrogen, oxygen, and【26】. nitrogen. They are different【27】 their elements are arranged【28】, and each vitamin【29】 one or more specific【30】 in the body.
【31】 enough vitamins is essential to life,【32】 the body has no nutritional use for【33】 vitamins. Many people,【34】, believe in being on the "safe side" and thus take extra vitamins. However, a【35】 diet will usually meet all the body’s vitamin needs. [br]
选项
A、made
B、done
C、consist
D、compose
答案
A
解析
be made of意为“由……组成”。其余三个词意思不对。
转载请注明原文地址:http://tihaiku.com/zcyy/4063293.html
相关试题推荐
Althoughhehaddonemanygreatthings,heneverfeltitnecessaryto______hisa
Thereisnonecessaryintrinsicconnectionbetweenawordandthethingitrefer
Thisroadis______tofloodinsummer,soitisnecessaryforustobuildares
Criticismandself-criticismarenecessary______theyhelpustofindandcorre
Sinceneithersidewasreadyto______whatwasnecessaryforpeace,hostilityw
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforth
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforth
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforth
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforth
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforth
随机试题
TheStudents’Unionprovidesvirtuallyalltheotherformsandaspectsofed
A.常用的金属螯合剂 B.常用的油溶性抗氧剂 C.自动氧化速度加快2~3倍
回弹仪测定水泥混凝土强度时,对1个测区的16个测点的回弹值,去掉2个最大值及2个
患者,男,62岁,患COPD12年。近3天因急性上呼吸道感染病情加重,体温38.
下列哪项不属于哌替啶的适应证()A.麻醉前给药 B.支气管哮喘 C.
下列不是消弧线圈接地时的现象的是?()消弧线圈发出接地告警信号$;$运维监控系
2020年12月,全国中心城市客运量的同比减少率与同年1月相差:A.不到
甲公司生产一种产品,该产品的年销售收入为100万元,单价为100元,单位变动成本
(2018年真题)关于竣工验收时应当提交的档案资料的说法,正确的有()。A.
(2017年真题)散热器的选用应考虑水质的影响,水的PH值在5~8.5时,宜选用
最新回复
(
0
)