第三节：单项填空（共15小题；每小题1分，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。
11. No matter when we are in ______ great trouble, we must never lose ______ heart.
A. a; / B. /; our C. the; / D. /; /
12. I’ve planned to treat a friend of mine to dinner ________for his help.
A. in addition B. in turn C. in return D. in total
13. You are lucky enough to escape ____________ after making such a mistake.
A. punishing B. being punished C. to be punished D. punish
14. Ladies and gentlemen, please remain __________until the plane has come to a complete stop.
A. sitting B. sit C. to sit D. seat
15. It’s surprising that your brother __________Russian so quickly----he hasn’t lived there very long.
A. picked up B. looked up C. put up D. made up
16. There is ______much competition among countries to host the Olympics ______to win Olympic medals.
A. so; as B. as; as C. not; as D. so; like
