63. The WTO can’t _____ its name if it doesn’t include a country that is home to one fifth of mankind.

A．live up to

B．go with

C．equal

D．compare with

大气稳定度：污染物在大气中的（）度有密切关系，大气稳定度是指在垂直方向上大气稳定的程度。

A.扩散

B.大气稳定

C.飘移

D.风向