第二部分英语知识运用（共两节，满分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，并在答题卡上将该项涂黑。
21. —Do you mind if I record your lecture?
—_______. Go ahead.
A. Never mind B. No way C. Not at all D. No. You’d better not
22. _______ issue of US spying has been _______ major worldwide concern since Snowden said that the US monitored many countries.
A. An, a B. The, the C. An, the D. The, a
23. United States President Barrack Obama was seen ________ a self portrait or selfie during Mandela’s memorial.
A. taking B. took C. take D. taken
24. With Chang'e-3 successfully landing, China becomes the third country in the world that _______ on the moon.
