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【简答题】
p17 练习2 固定搭配 (cup of / piece of / bar of / drop of / lump of / bottles of / pairs of /不填) Let me give you a ___________ advice. He's only got a ___________ of chocolate. They haven't had a ___________ for at least two months. Would you like another ___________ coffee? Please bring us two ___________ beer. I need a ___________ sugar for my coffee. Mary gave each of them a ___________ cookie. Here are some new ___________ shoes.
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皮皮学刷刷变学霸
举一反三
【单选题】下面运算正确的是（ ）
A.
3ab+3ac=6abc
B.
4a 2 b-4b 2 a=0
C.
2x 2 +7x 2 =9x 4
D.
3y 2 -2y 2 =y 2
【单选题】下面运算正确的是( )。
A.
26.65-3.926=22.72
B.
3764.3÷21.7=173.5
C.
18÷12.5=1.44
D.
12.22=148.8
【单选题】下面运算正确的是（ ）
A.
3a+6b=9ab
B.
3a 3 b-3ba 3 =0
C.
8a 4 -6a 3 =2a
D.
1 2 y 2 - 1 3 y 2 = 1 6
【简答题】程序段序号通常用 位数字表示。