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问题 选择题

2005年10月17日，我国成功回收“神舟六号”载人宇宙飞船上的水稻等农作物的种子，在传种接待的过程中起着重要作用的是[ ]

A．细胞壁

B．细胞膜

C．细胞质

D．细胞核

答案

D

单项选择题

闪光指数和光圈大小、闪光距离的关系是（）

A.闪光指数二闪光距离／f系数

B.闪光指数二f系数佃光距离

C.闪光指数二f系数X闪光距离

D.闪光指数二f系数+闪光距离
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单项选择题

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.

11（）

A.fluently

B.efficiently

C.exactly

D.actually
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