第二部分：知识运用（共两节，45分）
第一节单项填空（共15小题；每小题1分，共15分）
从每题所给的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. Gangnam Style, the world-famous horse-riding dance, has been ______ hit since its first video appeared on _______ Internet in Oct, 2012.
A. a; / B. a; a C. a; the D. /; the
22. What’s troubling us are not the burdens of our schoolwork but the ways we handle_________.
A．this B．it C. us D．them
23. Whatever background you come from, you can be_________ successful with your hard work like many others.
A．equally B．merely C．mostly D．hardly
24. Please remind me that there is still one point ________ I must make clear at the meeting to be held next week.
A. in which B. where C. that D. when
25. Most Americans say gun control is the only way they can imagine________ the number of school shootings in some American high schools．
A. reducing B. to reduce C. reduced D. reduce
26. Jim came back early last night. It was not yet eight o’clock ________ he got home.
A. before B. that C. when D. until
