第二部分：单项填空（共15小题，每小题1分，满分15分）
从四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项标号涂黑。
21. It is ____ great pity that the discovery of flight MH 370 still proves to be ____ failure.
A.不填；a B. the; the C. a; a D. a；不填
22.The majority of people in the town strongly ____ the plan to build a playground for children.
A. consider B. support C. confirm D. submit
23. The teacher stressed again that the students should not ____any important details while retelling the story.
A. bring out B. let out C. leave out D. make out
24. Only after Mary read her composition the second time ____ the spelling mistake.
A. did she notice B. she noticed C. does she notice D. she has noticed
25. Nowadays, more and more people like to hunt for what they want at www.taobao.com and have them ____ by the express company.
A. delivering B. delivered C. to deliver D. deliver
26. More and more high-rise buildings have been built in big cities____ space.
A. in search of B. in place of C. for lack of D. for fear of
27. The new technology, if____ to farming, will help increase the grain output.
