在生态系统中,能量是从固定_______开始的。

题型:填空题

问题:

在生态系统中,能量是从固定_______开始的。

考点:生态系统的功能
题型:填空题

与鼻咽癌有关的病毒是()

A.鼻病毒

B.单纯疱疹病毒

C.腺病毒

D.巨细胞病毒

E.EB病毒

题型:填空题

羚角钩藤汤的主治病证是()

A.肝热生风

B.肝肾阴亏,肝阳上亢

C.肝阳偏亢,肝风上扰

D.阴虚风动

E.痰热扰心

题型:填空题

阅读理解。

     Erik Weihenmayer was born with an eye disorder. As a child his eyesight became worse and then,

at the age of 13, he lost his sight completely. However, he did not lose his determination to lead a full

and active life.

     Erik became an adventurer. He took up parachuting, wrestling and scuba diving. He competed in

long-distance biking, marathons and skiing. His favorite sport, though, is mountaineering.

     As a young man, Erik started to climb mountains. He reached the summit of Mount McKinley in

1995 and then climbed the dangerous 1000-metre rock wall of EI Capitan. Two years later, while

climbing Mount Kilimanjaro in Kenya with his girlfriend, they stopped for a time at 13,000 feet above

sea level-in order to get married. In 1999, he climbed Aconcagua, the tallest mountain in South

America.And then, on May 25, 2001, at the age of 33, Erik successfully completed the greatest

mountaineering challenge of all. He climbed Mount Everest, the highest mountain in the world.

     Erik invented his own method for climbing mountains. He carries two long poles: one to lean on

and the other to test the way ahead of him. The climber in front of him wears a bell to gu ide him.

Erik is a good team member. He does his share of the job, such as setting up tents and building

snow walls.

      Although he could not enjoy the view, Erik felt the excitement of being on the summit of Everest.

He hopes that his success will change how people think about the blind."When people think about

a blind person or blindness, now they will think about a person standing on top of the world."

1. When was Erik born?

A. in 1968

B. in 1995

C. in 1967

D. in 1969

2.What was unusual about his wedding?

A.He got married on the summit of Mount McKinley.

B.He got married when climbing Mount Everest.

C.His wedding was held after he prepared a lot.

D.His wedding was held at 13,000 feet above sea level.

3.What is Erik's special method for climbing a mountain?

A.He takes his girlfriend with him.

B.He does his share of the jobs.

C.He uses two long poles to help himself.

D.He keeps a good team around him.

4.Which of the following adjectives can NOT be used to describe Erik?

A.brave

B.determined

C.stubborn

D.optimistic

5.Which of the following shows the right order of what happened?

a.He topped Mount McKinley.

b.He became blind.

c.He challenged Mount Everest.

d.He reached the peak of Kilimanjaro.

e.    He climbed the rock wall of EI Capitan.

A.b, e, d, c, a

B.b, a, e, d, c

C.a, b, e, d, c

D.b, e, a, c, d

题型:填空题

高档486PC 机,主板(母板)上一般带有高速缓冲存储器,简称CACHE,这个CACHE 是 ( )。

A.硬盘与主存储器之间的缓存

B.软盘与主存储器之间的缓存

C.CPU与视频设备之间的缓存

D.CPU与主存储器之间的缓存

题型:填空题

米格-23“鞭挞者”于()投入正式生产并装备空军。

A、1970年

B、1971年

C、1972年

D、1973年

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