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【多选题】
汽车制动系统的作用有( )。A.
减速甚至停车
B.
下坡维持车速稳定
C.
保证汽车不会甩尾跑偏
D.
保证汽车可靠驻车
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举一反三
【简答题】No sooner he had entered the room than the telephone rang.
【单选题】No sooner he left Beijing than his mother fell sick.
A.
No sooner
B.
he left
C.
than
D.
fell sick
【单选题】同学们,仔细思考一下,你自己家所从事的经济行业,是否存在不环保的环节。你是否愿意为家里寻找一条环保且可持续发展的途径。
A.
有，我在为此付出努力
B.
没有
C.
没注意，不想说
【单选题】找出句子中的一处错误。 No sooner he left Beijing than his mother fell sick.
A.
No sooner
B.
he left
C.
than
D.
fell sick
【单选题】No sooner he left Beijing than his mother fell sick .
A.
no sooner
B.
he left
C.
than
D.
fell sick
【简答题】No sooner he left Beijing than his mother fell sick . ( )
【单选题】Each of the following sentences contains ONE mistake. Find it out and correct it. No sooner he left Beijing than his mother fell sick.
A.
No sooner he had left Beijing than his mother fell sick.
B.
No sooner he has left Beijing than his mother fell sick.
C.
No sooner had he left Beijing than his mother fell sick.
D.
No sooner has he left Beijing than his mother fell sick.
【单选题】python 的 turtle 中绘制圆型使用的函数时 circle ,那么绘制弧线使用的函数是
A.
circle
B.
square
C.
triangle
D.
rectangle
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