问题
______is known to us all, only the theory ______ on practice can be practical.
A:Which; base
B:Which; based
C:As; based
D:As; basing
B:Which; based
C:As; based
D:As; basing
正确答案是：
同类题型
Shirley, a real book lover, often brings home many books to read _____ the library[ ]
Was it from the lake ________ he often went fishing________ he saved the drowning girl
He telephoned the travel agency to ________ three air tickets to London.
Bill jumped ____ than any other player at the sports meeting.