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【简答题】
如图为人体上肢骨和附的两块骨骼肌，据图回答． （1）此图表示的状态是______，此时图中（①）______收缩，（②）______舒张． （2）图中③表示______，其中______和______使关节有牢固性，______和______使关节灵活自如． （3）亲手做一做： 做一次伸肘的动作，体会一下伸肘时，是______肌在用力．
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【简答题】决策过程有几个方面? A两个 B三个 C四个 D五个
【单选题】How does the fire affect the local airport?
A.
The thick smoke of the fire affects the vision.
B.
The airport is forced to close temporarily.
C.
The helicopters are refueled at the airport.
D.
Airlines have to decide whether to land or not.
【单选题】Why was an airport forced to close down?
A.
Because the blazes from the fire were too hot.
B.
Because the smoke from the fires was too thick.
C.
Because it was too droughty at the airport.
D.
Because it rained heavily there.
【单选题】Mile ’ s experiment to teach Chantek to share things proves to be __________.
A.
a great success
B.
a blunder
C.
a great failure
D.
an unwanted thing
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