Like many other aspects of the computer ag

题型:单项选择题

问题:

Like many other aspects of the computer age, Yahoo began as an idea, (1) into a hobby and lately has (2) into a full-time passion. The two developers of Yahoo, David Filo and Jerry Yang, Ph. D candidates (3) Electrical Engineering at Stanford University, started their guide in April 1994 as a way to keep (4) of their personal interest on the Internet. Before long they (5) that their homebrewed lists were becoming too long and (6) . Gradually they began to spend more and more time on Yahoo.

During 1994, they (7) yahoo into a customized database designed to (8) the needs of the thousands of users (9) began to use the service through the closely (10) Internet community. They developed customized software to help them (11) locate, identify and edit material (12) on the Internet. The name Yahoo is (13) to stand for "Yet Another Hierarchical Officious Orale", but Filo and Yang insist they selected the (14) because they considered themselves yahoos. Yahoo itself first (15) on Yang’s workstation, "akebono", while the search engine was (16) on Filo’s computer, "Konishiki".

In early 1995 Marc Andersen, co-founder of Netscape Communication in Mountain View, California, invited Filo and Yang to move their files (17) to larger computers (18) at Netscape. As a result Stanford’s computer network returned to (19) , and both parties benefited. Today, Yahoo (20) organized information on tens of thousands of computers linked to the web.

8()

A.explain

B.serve

C.discover

D.evaluate

考点:普通考研西医综合西医综合
题型:单项选择题

一种新发现的细菌质粒中有a、b、c等基因,下图表示用限制性内切酶处理后得到的片段。有关叙述不正确的是

[ ]

A.基因a、b、c的遗传不遵循孟德尔遗传规律

B.基因a控制合成的蛋白质含有m个氨基酸,比水稻中控制合成含有m个氨基酸的蛋白质的基因长度要短很多

C.若利用某药物阻止基因a的表达,则基因b、c也不能表达

D.组成基因a、b、c的基本单位相同,且都有RNA聚合酶结合位点

题型:单项选择题

如图所示为用某种透明材料制成的一块柱形棱镜的截面图,圆弧CD是半径为R的四分之一圆周,圆心为O,光线从AB面上的某点入射,入射角i=45°,光进入棱镜后恰好在BC面上的O点发生全反射,后由CD面射出.

①画出光线由AB面进入棱镜且从CD弧面射出的光路图;

②求该棱镜的折射率n.

题型:单项选择题

承销机构应在承销期满后()日内向证监会提交承销报告。

A.10 

B.15 

C.20 

D.30

题型:单项选择题

赤字增加的时期是()。

A.经济繁荣时期

B.通货紧缩时期

C.通货膨胀时期

D.经济衰退时期

题型:单项选择题

政府鼓励企业安置职工就业而给予的奖励款项不属于政府补助。

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