第二部分 英语知识运用（共两节，满分45分）
第一节：单项填空(共15小题；每小题1分，满分15分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21．I don’t think the competition is failure, because it has offered us valuable experience for the next competition.
A．不填；不填 B．不填；a C．a ; 不填 D．a ; a
22．When she was in trouble, I did what I could to help her. my help, she wrote me a letter of thanks.
A. In honor of B. In case of C. In terms of D. In return for
23．Only by practicing a lot _____ our English well enough to communicate with foreigners.
A. we can learn B. can we learn C. learn we D. we learn
24．I would appreciate ______ very much if you help me with my English.
A. it B. that C. this D. you
25．Peterson used to work in a remote mountain village school, which is only on foot.
A．reliable B．accessible C．available D．convenient
26．—Someone has tidied the sitting room!
—Jim __ it this morning; he couldn't bear the mess any more．
A．has done B．would do C．had done D． did
27．Can you explain ________ the sun goes down in the west?
A. why is it that B. why it is that C. how it is that D. how is it that
28．Have you considered how weak humans are a volcano, hurricane or earthquake?
A. comparing with B. to compare with
