21. Many old residential areas(居民区) were torn down ______ new modern communities.
A. in response to B. in reaction to C. in agreement with D. in favor of
22. Don’t leave your shopping on the back seat of your car. It’s an open_______ to a thief.
A. floor B. cause C. contribution D. invitation
23. Her cough_______ her presence behind the door.
A. showed B. betrayed C. preserved D. reflected
24. My hearing is a little_______, especially when the noise level goes beyond what I can tolerate.
A. sharp B. accurate C. sensitive D. reliable
25.Julia failed to _________her mid-term exam.
--What a pity! No wonder she is in low spirits.
A. get over B. get through C. get across D. get round
