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【单选题】
在△ABC中,∠A=20°,∠B=60°,则△ABC的形状是
A.
等边三角形
B.
锐角三角形
C.
直角三角形
D.
钝角三角形
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【单选题】I would rather you ______ there.
A.
walking     
B.
to walk     
C.
walk     
D.
walked
【单选题】When you walk in a busy street, you should walk on the side ______.
A.
where the wind is coming
B.
where the wind is going
C.
where the wind is weaker
D.
where the wind is stronger
【简答题】设 , ,求 (1) 在 处增加最快的方向以及 沿这个方向的方向导数; (2) 在 处减少最快的方向以及 沿这个方向的方向导数; (3) 在 处的变化率为零的方向.
【简答题】You have to ______ if you want to go on the Ghost Walk.
【单选题】---Will you walk a little faster? ---I was afraid you could not _____ .
A.
walk up
B.
go up
C.
keep up
D.
catch up
【简答题】You walk on it in a room.
【简答题】You can walk on it.
【单选题】______ the road and you’ll see the hospital.
A.
Crossing
B.
Walk cross
C.
Across
D.
Walk across
【多选题】为他人作介绍时必须遵守“尊者优先知情”规则。以下介绍正确的有( )。
A.
把职务低者介绍给职务高者
B.
把同事、朋友介绍给家人
C.
聚会上把后到者介绍给先到者
D.
把已婚者介绍给未婚者
【单选题】The tip 'know when to walk away' tells us that ______.
A.
you should walk away when you see something you like but expensive
B.
sometimes appropriate detached attitudes can ensure you a bargain
C.
don't act too shy to leave
D.
you'd better walk away when you have a second chance
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