蜜蜂：蜂蜜
A．橡胶：塑料
B．牛：牛肉
C．蚌：珍珠
D．鸟：鸟巢
参考答案：C
解析： 蜂蜜是蜜蜂采蜜的成果。同理选C。
One of the men held the view ________ the book said was right.
A．what that
B．that what
C．that which
D．which that
煤气管道每（）m间距应设置一个排水器。
A.500
B.200～25O
C.300
D.600
