22. Last week, I got a copy of New English 900 at a bookstore; after I read it, I went on _____ theNew Concept English.
A. reading
B. in reading
C. to read
D. read
查看答案
23. It is perhaps not generally realized _____ to make really accurate translations of high technical material.
A. how difficult it is
B. how difficult is it
C. how it is difficult
D. how is it difficult
24. _____ on a clear day, far from the city crowds, the mountains give him a sense of infinite peace.
A. If walking
B. While walking
C. Walking
D. When one is walking
25. So little _____ about mathematics that the lecture was completely beyond me.
A. I know
B. I knew
C. do I know
D. did I know
26. It was not long _____ the news spread and people from all over the world came to visit this miracle of nature.
A. after
B. before
C. until
D. when