第二部分英语知识运用（共40分）
第一节、单项填空（共10小题, 每小题1分，满分10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，并在答题卡相应番号后将该项涂黑。
21. Michelle Obama, ______ First Lady of the USA, had ________ experience of getting close to a giant panda in Chengdu.
A. The ; the B. / ; / C. / ; an D. The ; /
22. — How far can you run without stopping if an earthquake happens?
— ________. I’ve never tried.
A. Don’t mention it B. That’s all right
C. I have no idea D. Go ahead
23. _______was reported that a massive 8.2 magnitude earthquake struck the coast of Chile on the evening of
