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【单选题】
如图所示，倾角为q的斜面上固定有一竖直挡板，重为G的光滑小球静止时，挡板对球的弹力大小为F N1 ，斜面对球的弹力大小为F N2 ，则（）A.
F N1 ＝Gtanq
B.
F N1 ＝Gsinq
C.
F N2 ＝Gcosq
D.
F N2 ＝Gsinq
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举一反三
【简答题】Match the expressions with the pictures
【简答题】Match the pictures with the words:
【简答题】What activities are helpful in teaching pronunciation?
【简答题】The teacher told us to match the pictures the paragraphs. [ ] A at B. by C. to D. with
【简答题】Look at the pictures. Match the pictures with the words.
【简答题】Look at the pictures. Match the pictures with the words.
【简答题】match the pictures with words
【简答题】Match the words with the pictures
【简答题】Match the pictures.
【多选题】What activities are typical in Chinese business interactions with foreigners?
A.
Sightseeing
B.
welcome banquet
C.
influence and persuade eaach other
D.
communicate about issues of individual
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