迈克尔认为学习策略包含着认知策略、______和资源管理策略三大部分。

海洋中大量的藻类植物均匀分布在浅海，而在海洋深处却无迹可寻，导致这一分布现象的原因是（　　）

A．温度

B．阳光

C．水分

D．压力

2013年10月23日，河南省南阳张仲景医药文化节期间向全球发布“医圣”张仲景像。千百年来，张仲景没有一个统一的样貌和形象，这无疑成了历史之谜，不利于树立世界范围内公认的张仲景形象。此次从根本上解决了以往张仲景造像诸多，型态各异，杂乱无章的混乱现象。人们纪念张仲景的主要原因是

A．著有《伤寒杂病论》，奠定了我国中医治疗学的基础

B．发明了“麻沸散”，在世界上首先实施麻醉手术

C．他总结出来的望、闻、问、切四种中医诊断方法

D．写成了医药学巨著《本草纲目》，被翻译成多国文字。

阅读理解。

     Space travel is definitely bad for astronauts' bones, reducing their bone density(密度)

after only a month of weightlessness, according to French research published on Friday.

     Laurence Vico and his fellow workers at St Etienne University called for more research

into the effects of microgravity, after their study of 15 astronauts from the Russian MIR station

showed bone loss continued throughout space flights.

     "Bone loss was especially striking in four astronauts, " the scientists reported in the Lancet

Medical Journal.

     They measured the bone mineral density (BMD) of bones in the forearm(前臂) and

lower leg of the astronauts who had spent one to six months in space.

     The BMD loss was significant in the tibia(胫骨) of the lower leg, a weight-bearing bone,

but barely changed in the radius(桡骨) of the forearm. "Our results indicate the need to

investigate not only different bones, but also different areas of the same bone since not all

sites of the skeleton (骨架) are similarly affected by space conditions, " they added.

     Without gravity the body isn't bearing any weight so there is no need for calcium (钙)

which makes bones strong, and it becomes empty into the bloodstream.

     The research team suggested in future scientists should try to determine if the loss of bone

density was only on weight-bearing bones on longer flights, also the possible recovery after

returning to Earth.

1. French scientists did their research on Russian astronauts, because _______.

A. they only cared for the Russian astronauts

B. they were not interested in their own astronauts

C. the Russian government invited them to do their research

D. the Russian astronauts worked in space for a period of time

2. Scientists have found that _______.

A. the BMD loss may cause serious illness to astronauts

B. the BMD loss may cause some change in astronauts' bodies

C. astronauts shouldn't care about the BMD loss

D. astronauts should take some calcium before space travel

3. What cause the BMD loss to astronauts, according to this passage?

A. The food they eat in space.

B. The drinks they take in space.

C. The temperature in space.

D. The gravity in space.

4. In the third paragraph, the underlined word "striking" means ______.

A. unusual

B. simple

C. weak

D. slow

G3520C要求瓦斯气进口的杂质参数（）。

A.小于100UM

B.小于10UM

C.小于1UM

D.小于5UM

高压手车式断路器的运行位置有：（）位置、（）位置、（）位置。