问题

The air in mountain areas is ____ that in big cities.

A:as fresh as
B:fresher than
C:as dirty as
D:dirtier than

正确答案是：

同类题型

Whether ways will be found to help China _______ the current world financial crisis is just _______ worries the public

There is a big tree ______ thehouse.

Taking charge of the big company, I’m afraid, is _____ his ability．After all, it is only three years since he graduated

Last week another teacher, Jenny, and I did visit a village _____ is the home of one of the boys, Tom.

How many ______ are there on the table