首页
登录
职称英语
Many people feel that human beings should be responsible forthe disappearan
Many people feel that human beings should be responsible forthe disappearan
游客
2024-11-28
22
管理
问题
Many people feel that human beings should be responsible for
the disappearance of some other animal species. It is true we may【M1】______
have hastened the disappearance of some species, but abundant
evidence suggests that mankind has actually had few impact Biologists【M2】______
point out that 50 species can be expected to disappear in the 20th
century but also remind us that about 50 species became extinct in the
19th century, and 50 species in each of the centuries after that Dr. T. H.【M3】______
Jukes at the University of California has pointed out that about 100
million animal species have become extinct since life began on the
earth about 3 billion years before. Thus, animals come and animals【M4】______
go as a consequence of natural selection as Mr. Darwin had invented.【M5】______
The human race is a recent newcomer to the scene, so we’ve had
nothing whatsoever to do with the disappearance of millions of species.
In fact, when it comes right down it, we’re a miserable failure【M6】______
at genocide. In spite of an all-out centuries-old war against rats, but【M7】______
we haven’t made a dent in its numbers, much less extinguished a【M8】______
single species. And in spite of all our high technology we have not
been successful on eliminating a single undesirable insect species!【M9】______
I’ve come to the conclusion that the people who are trying to
save world are probably quite sincere about it, therefore they don’t know【M10】______
much about science and certainly nothing about systems engineering. [br] 【M4】
选项
答案
before→ago
解析
词汇错误。before和ago都表示“以前”,但before主要用于过去完成时,ago主要用于一般过去时。since引导的从句用的是一般过去时(began),所以要把before替换成ago。
转载请注明原文地址:https://tihaiku.com/zcyy/3864342.html
相关试题推荐
Manypeoplefeelthathumanbeingsshouldberesponsibleforthedisappearan
Manypeoplefeelthathumanbeingsshouldberesponsibleforthedisappearan
Manypeoplefeelthathumanbeingsshouldberesponsibleforthedisappearan
Manypeoplefeelthathumanbeingsshouldberesponsibleforthedisappearan
Manypeoplefeelthathumanbeingsshouldberesponsibleforthedisappearan
Manypeoplefeelthathumanbeingsshouldberesponsibleforthedisappearan
The______andSaxonsaretheancestorsoftheEnglishpeopletoday.A、VikingsB、
Itcanbetemptingtohidefromthepeople,placesandtaskswhichmakelife
Itcanbetemptingtohidefromthepeople,placesandtaskswhichmakelife
Itcanbetemptingtohidefromthepeople,placesandtaskswhichmakelife
随机试题
InterpretthefollowingpassagefromEnglishintoChinese.Startinterpretingat
【S1】[br]【S5】J该空格前为连系动词stay,空格后为并列连词and,因此空格处应选和healthy构成并列的形容词。结合句意“健康教育帮助我们了解
[originaltext]W:HeyTom,gotasecond?M:Sure,what’sup?W:Thecompanyhas
SalesContractNo.:SC-5DoneandsignedinBeijing
[originaltext]The19thcenturyWildWestcriminalBillytheKidhasbeende
根据《合同法》的规定,因国际货物买卖合同和技术进出口合同争议提起诉讼或者申请仲裁
房地产交易的特点有()。A.实物发生空间转移 B.实物不发生空间转移
关于营养途径的选择,下列哪项是错误的? A.胃肠存在部分功能者首选肠内营养B
3,15,35,63,()。 A.78B.81C.99
患儿,9岁。发热,咽痛1日就诊。体检:体温38.9℃,咽部充血,双扁桃腺肿大Ⅱ°
最新回复
(
0
)