______ the extreme levels of air pollution, city authorities have started to take measures to quickly reduce pollution levels and protect city dwellers.
| A．In spite of | B．As well as | C．In response to | D．By means of |
第二部分知识运用（共两节，满分20分）
第一节单项填空（共10小题；每小题1分，满分10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. When I got up that morning, I found ________ elephant standing by the window.
A. a B. an C. the D. 不填
30 — I’ve been told that the sports meeting might be ______.
— Yes, it all depends on the weather.
A put away B put out C put aside D put off
29 If there were no rain, we should have＿＿＿ on the beach.
A the happiest time B a more happier time
C much happiest time D a much happier time
28 He spoke very slowly, but he still didn’t get his meaning _______.
A across B cross C through D though
27 I’m sorry if I hurt your feelings. I didn’t _______.
A expect to B mean to C do that D hope so