问题 单项选择题

处方直接写药名,需调配蜜炙品的是()

A.紫苏子

B.吴茱萸

C.枇杷叶

D.延胡索

E.何首乌

答案

参考答案:C

完形填空
Is global warming killing the Maldives?
The Maldives(马尔代夫) is one of the most beautiful countries in the world. Every year, millions of         go there to enjoy the wonderful scenery. And in recent years, more and more people would like to visit it,       ? Because the little island country is         . If global warming           , say scientists, the country will go down into the ocean within 100 years. That means the Maldives          have disappeared by 2100.
The Maldives          in the Indian Ocean. It is the           country on earth—its highest point is only 2.4m above sea level.          Greenhouse gas emissions(排放), global temperature and sea levels will rise         9cm and 88cm by 2100. If scientists are       , most of the Maldives will be covered with water in years.
Last October, Maldivian President Mohamed Nasheed and his cabinet(内阁)held the world’s first underwater cabinet meeting to make the world         the terrible results from global warming to their own country. In December, he         at the 2009 United Nations Climate Change Conference(大会) in Copenhagen, trying to ask for help from the world for        country. The president even has a         to buy a new homeland and move his country and people to a new place.
The Moldavian government has been doing all it can to fight the         . But the fate(命运)of the islands is in the world’s hands. No one wants to see this little island country disappear from the world.
小题1:
A.scientists B.tourists C.presidents D.doctors
小题2:
A.Who B.How C.Why D.When
小题3:
A.in trouble B.for ever C.as usual D.all right
小题4:
A.disappears B.happens C.misses D.continues
小题5:
A.canB.should C.might D.must
小题6:
A.lives B.lies C.jumps D.arrives
小题7:
A.highest B.highC.lowest D.low
小题8:
A.Instead of B.Because of C.With the help of D.Thanks for
小题9:
A.both B.from C.during D.between
小题10:
A.wrong B.correct C.helpful D.dangerous
小题11:
A.get B.guess C.realize D.expect
小题12:
A.served B.spokeC.worked D.sang
小题13:
A.his B.their C.its D.your
小题14:
A.taskB.problemC.plan D.notice
小题15:
A.tourists B.place C.island D.sea
单项选择题

①公元2000年到来之际,人类忽然发现多少年来对生命的认识将被重新改写。1997年克隆羊的诞生,使奋类可以利用生物体上的一个非胚胎细胞复制生命;仅仅两年之后的新发现,将使人类可以利用无生命的物质创造出新的生命来。 

②世。界权威的科学刊物《科学》杂志报道了这个惊人的发现,科学家已经找到了形成生命所需要的基因数量。这个消息犹如‘发重磅炸弹,轰动了科学界。人们认识到,这意味着科学界能够利用没有生命的化学物质在实验室中制造出生命来。 

③美国马里兰州基因组研究所对一种细菌进行层层拆解,一直拆到生命所必需的基因。科学家们发现,构成一个简单生命至少需要265到350个基因,这300个左右的基因是建构生命体最小的分子指令集。该基因研究所的遗传专家克雷格·文特尔博士说,这项研究是用生物体全部基因的集合,即基因组(genome),对生命重新定义。 

④科学界研究的这种细菌生存于人类的生殖器及肺部,是世界上最小的生物体。它不会给人体带来什么疾病,但所含的基因数目少于任何其他已知生物。人类基因数在80000到140000之间,而这种细菌只有480个。克雷格·文特尔等人使细菌中的基因逐个失去活性,如果细菌死亡,说明这一被杀死的基因是细菌成活所必需的,通过对大量细菌的测试,他们发现了这种细菌成活所必需的基因。由于这种细菌是最简单的生命形式,因此它所必需要的基因数量也就是生命所必需的基因数量。

⑤《科学》杂志还报道产,经过分析发现,这种细菌的必需基因中,有100个基因的功能目前仍不清楚,这些未知但却是必需基因的存在,表明人类尚未了解关于基本生命的每一件事;

对作为研究对象的“一种细菌”的理解,不符合原文意思的一项是()。

A.在生物界里,这种细菌是世界上最小的生物体

B.这种细菌存在于人的生殖器和肺部,不会使人产生疾病

C.这种细菌的基因数目少于任何其他已知生物

D.这种细菌的基因数目只有480个,比人类基因数目少166倍多