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【单选题】
如图所示, A、B 两物体叠放在水平桌面上受到两个水平拉力而保持静止,在两个已知 F 1 = 5 N,F 2 = 3 N.那么物体 B 受物体 A 和水平桌面的摩擦力大 分别为 ()A.
5 N、3 N
B.
5 N、2 N
C.
2 N、3 N
D.
3 N、5 N
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举一反三
【多选题】For acquaintances/close friends: How to greet each other?
A.
What’s up?
B.
Long time no see!
C.
It’s my pleasure to meet you!
D.
Haven ’ t seen you for ages!
【单选题】If you learn English well, you are on the road ______ success.
A.
among
B.
off
C.
to
D.
in
【单选题】If you learn English well, you are on the road ( ) success.
A.
out
B.
to
C.
with
D.
in
【单选题】If you learn English well, you are on the road ( ) success.
A.
toward
B.
to
C.
on
D.
in
【单选题】---- Why don ’ t you join an English club to practice speaking English? ---- ( ) .
A.
It’s my pleasure.
B.
Take it easy.
C.
That’s all right.
D.
That’s a good idea.
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