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【简答题】
“四位一体”（沼气池—畜禽养殖—厕所—日光温室）生态农业是我国北方典型的生态农业模式，它以沼气为纽带，将沼气池、畜禽舍、蔬菜栽培与日光温室有机地组合在一起。如图是该系统物质循环的示意图，请分析回答下列问题： 图中有几条食物链（）
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举一反三
【单选题】( )是指大拇指和其他四指的动作逐渐分开,而且活动时采取对立的方向,而不是五指一把抓。五指分工动作和眼手协调动作是同时发展的,这是人类拿东西的典型动作。
A.
五指分工
B.
抓握
C.
手指动作
D.
手势
【单选题】Eye contact with an audience, according to the author, has all the following benefits for the speaker EXCEPT that it doesn't ______.
A.
help the speaker to control the audience
B.
help the speaker to gain audience interest and esteem
C.
help the speaker to know whether he is talking too much about a certain point
D.
help the speaker to analyze his audience when he is beginning his speech
【单选题】What is the dependent clause in this sentence? If all the world is a stage, where is the audience sitting?
A.
If all the world is a stage
B.
If all the world
C.
Is a stage
D.
Where is the audience sitting
【简答题】所谓( )是指大拇指和其他四指的动作逐渐分开,而且活动时采取对立的方向。
【单选题】It was such an __________ performance that it ___________ all the audience.
A.
astonished, astonishing
B.
astonished, astonished
C.
astonishing, astonishing
D.
astonishing, astonished
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