我们常见的泵的外壳材料（）。
A.塑料
B.金属
C.铝合金
D.铜合金
参考答案：B
What a table! I've never seen such a thing before. It is _________it is long. [ ]
A. half not as wide as
B. wide not as half as
C. not half as wide as
D. as wide as not half
