第二部分 英语知识运用（共两节, 满分35分）
第一节：单项填空（共15小题; 每小题1分，满分15分）
请认真阅读下面各题，从题中所给的A、B、C、D四个选项中，选出最佳选项, 并在答题卡上将该项涂黑。
21. In _________ response to the credit crunch, the US federal government adopted __________ $ 700 billion plan meant to reassure the markets and get credit flowing again.
A. the; a B. a; a C. /; a D. /: the
22. In the telephone conversation, President Hu Jintao expressed __________ to Obama for emphasizing in his election campaign speeches the great importance of China-US relations,
A. congratulations B. interests C. hope D. appreciation
