首页
登录
职称英语
Throughout history man has had to accept the fact that all living things mus
Throughout history man has had to accept the fact that all living things mus
游客
2023-07-28
57
管理
问题
Throughout history man has had to accept the fact that all living things must die, but people now live longer than they 【C1】______. Yet, all living things still show the【C2】______of aging, which will eventually【C3】______death.
Aging is not a disease, but as a person passes maturity, the cells of the body and the【C4】______they form do not function as well as they【C5】______in childhood and adolescence (青春期), The body provides less【C6】______against disease and is more inclined【C7】______accident.
A number of related causes may【C8】______aging. Some cells of the body have a fairly long life, but they are not【C9】______when they die. As a person ages,【C10】______of brain cells and muscle cells decreases.【C11】______body cells die and are replaced by new cells. In an aging person the【C12】______cells may not be as viable (能生存的)or as capable【C13】______growth as those of a young person.
Another【C14】______in aging may be changes within the cells【C15】______. Some of the protein chemicals in cells are known【C16】______with age and become less elastic. This is why the skin of the old people wrinkles and【C17】______. This is also the reason old people【C18】______in height. There may be other more important chemical changes in the cells. Some complex cell chemicals, such as DNA and RNA, store and【C19】______information that the cells need. Aging may affect this【C20】______and change the information-carrying molecules so that they do not transmit the information as well. [br] 【C4】
选项
A、arms
B、feet
C、heart
D、organs
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2875443.html
相关试题推荐
Thestandardoflivingofanycountrymeanstheaverageperson’sshareofth
Thestandardoflivingofanycountrymeanstheaverageperson’sshareofth
TheEarlyHistoryofHarvardUniversityHarvardUniver
TheEarlyHistoryofHarvardUniversityHarvardUniver
TheEarlyHistoryofHarvardUniversityHarvardUniver
TheEarlyHistoryofHarvardUniversityHarvardUniver
TheEarlyHistoryofHarvardUniversityHarvardUniver
TheEarlyHistoryofHarvardUniversityHarvardUniver
IntheWest,theemphasisisonwhatamanorwomandoesforaliving.Here
IntheWest,theemphasisisonwhatamanorwomandoesforaliving.Here
随机试题
ThePressConferenceThepressconferencehascertainadvantage
[originaltext]JaneBrown’sbeenmarriedfor12years.Shehasthreechildre
TheBeautyAdvantage[A]Mostofushaveheardthestory
[originaltext]KennyEnjoysDrivingaTaxiInterviewer:Well
公众聚集场所在投入使用、营业前,建设单位或者使用单位应当向场所所在地的县级以上地
哪项措施可以提高梁的抗侧稳定性?( )A.翼板宽度 B.肋板宽度 C.梁高
高压交变电场疗法亦称高电位治疗,在康复治疗中最多用于治疗A.心力衰竭 B.肝功
符号s、σ分别表示A.样本标准差和总体标准差 B.样本标准差和方差 C.总体
甲醛常作为尿液的防腐剂,一般每升尿中加入A.10%甲醛溶液5~10mlB.20%
A.静脉或气管内滴人肾上腺素 B.非同步直流电除颤 C.人工呼吸、胸外按压
最新回复
(
0
)