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【单选题】
教学片段 :举个例子,当人走路时,脚不打滑,后脚是否受到摩擦力呢?摩擦力的方向是怎样的呢? 首先我们要知道摩擦力的物体为地面,选地面为参照物,当后脚用力蹬地时,假设地面光滑,则脚将后滑,所以脚掌有滑的趋势,可知脚掌受到静摩擦力,并所受静摩擦力向前,此即为人前进的动力。 教师在回顾假设法判断静摩擦力的摩擦力有无后,紧接着通过举例子分析人走路时所受的摩擦力,这是运用了结束技能的哪个构成要素?A.
要点概括
B.
建立联系
C.
回顾方法
D.
深化拓展
E.
组织练习
F.
评价
G.
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【简答题】下面一句话属于一般性的描写，请发挥你的想象，增加一些词语或句子，使用夸张、拟人的手法，使其传达出一种炎热难耐的意境。(30—50字)(3分) 太阳发着光，树上的蝉儿鸣叫着，小草立在路边。
【单选题】________signifies that vessel has passed quarantine inspection and may enter port.
A.
Freeboard
B.
Freight
C.
Pratique
D.
Patent
【简答题】听对话，回答问题。 1. Why hasn't Jimmy come down for breakfast? A. Because he is sleeping. B. Because he is ill. C. Because he forgets the time. 2. Where may the speakers be? A. At school. B. In the hospital. ...
【简答题】听对话，回答问题。 1. Why is Wang Qiang unhappy? A. Because he is ill B. Because he failed the math exam last Friday. C. Because he is lonely 2. What should he do? A. He should do more math exericise. B. He sh...
【单选题】A vessel may enter a traffic separation zone（）.
A.
in an emergency
B.
to engage in fishing within the zone
C.
to cross the traffic separation scheme
D.
Any of the above
【简答题】听对话及问题，选择正确答案。 ( ) 1. A. Because he is speaking too fast. B. Because he is speaking too slowly. C. Because he doesn't know what to say. ( ) 2. A. He will look up the word in a dictionary. B. H...
【简答题】下面一句话属于一般性的描写,请你发挥想象,增加一些词语或句子,使用夸张、拟人手法,使其传达出一种炎热难耐的意境。 盛夏的中午,太阳发着光,树上的蝉儿鸣叫着,小草立在路边。
【简答题】听对话，回答问题。 1. Why is David so fat? A. Because he doesn't exercise. B. Because he eats too much at lunchtime. C. Because he watches TV all day. 2 What do we know about David? A. He has too much for lunc...
【简答题】听对话，选答案。 ( ) 1. A. Because he has a lot of money. B. Because the zoo is new. C. Because he wants to help the animals. ( ) 2. A. 50 yuan, a pair. B. 100 yuan, a pair. C. 200 yuan a pair. ( ...
【单选题】A vessel may enter a traffic separation zone（）.
A.
in an emergency
B.
to engage in fishing within the zone
C.
to cross the traffic separation scheme
D.
All of the above
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