第二部分英语知识运用（共两节，满分45分）．
第一节 语法和词汇知识（共15小题；每小题1分，满分15分)
从各题所给的四个选项(A、B、C和D)中，选出最佳选项填入空白处。
21. What makes a play _______ masterpiece is that the ideas behind ______ play are
about problems which are still important to____ people of different ages in ____ modern times.
A.the; the; the; / B. a; the; the; / C. a; the; /; / D. a; a; the; /
22. Niagara Falls is a great tourist _____ drawing millions of tourists from all parts of the world every year.
A. interest B. attraction C. view D. scene
23. When ______ comes to saving energy, big changes start with small steps, like turning off the lights.
A.that B. this C. it D.one
24. ---Volunteering is becoming ______ popular in China.
--- Yeah, people are now aware that helping others is helping themselves.
