第二部分 英语知识运用
第一节 单项填空 (共15小题, 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. Piano (piano) is a kind of musical instrument popular with people of all ages. Many people wait in line for a ticket when word comes that there is going to be a piano concert.
A. The; the B. A; a C. The; / D. /; /
22. Is Qinghai Tibet railway plays an important role in China’s railway history the topic that you are coming to?
A. what B. it C. that D. this
23. Write a letter to the manager, explain who you are, say what you like about the hotel, and suggest some ways that their services improved.
A. can be B. be C. are D. will be
