The walls are made of hollow concrete blocks.A:big B:empty C:long D:new

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问题 The walls are made of hollow concrete blocks.

选项 A:big
B:empty
C:long
D:new

答案B

解析本句意思:这些墙用空混凝土块建成。hollow的意思是“空的,空洞的”,与empty意思相 近。big大的;long长的;new新的。
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