第二部分：英语知识运用（共两节, 满分45分）
第一节：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。
21. Everybody has ______ responsibility to save water, if future generations are to enjoy _____ imilar standard of living to the one we enjoy now.s
A. the; / B. a; a C. /; the D. a; the
22. Scientists say human activity contributes to climate change, but they do not agree on the rate_______ climate change may be developing.
A. with which B. with that C. at which D. at that
23. 20. I always think of the happy days we spent together _______ I hear the song .
A. every time B. the first time C. for the first time D. by the time
24. ---Why didn’t you attend the party last night?
--- I _________ my sick sister at home.
A. looked after B. had looked after
C. have been looking after D. was looking after
25. The detective, ______ to be reading a newspaper, glanced at the man_____ next to a woman.
