27、Atlanta      a series of fierce fights between blacks and whites in the 1960s.

   A. had              B. gathered            C. saw           D. overcame

26、 Just like fingerprints, each person's DNA is      unless he has a twin.

   A. unusual               B. likely                    C. various            D. unique

25、― Where is the plane? I can’t see it.

― It went off its _____ to keep away from the sudden storm.

A. road             B. course           C. flight          D. direction

24、 It’s ____ kind of you to take so much trouble with me.

A. awfully          B. foolishly          C. differently        D. patiently

23、―People like traveling very much.

―Yes, Sometimes we do need a journey to      from our busy life a while.

     A. run away                B. get away               C. take away           D. break away

22、Having retired from business, he now ____ himself with the welfare of the disabled.

     A. adapts           B. charges              C. associates         D. occupies

21、The inspector ____ his fingers over the sheet of newspaper. There were some marks on the surface of the paper.

A. turned           B. set              C. held           D. ran

20、If you don’t keep the meat in the refrigerator on such a hot day, it may ____.

A. go out           B. go away          C. go off          D. go down

18、

--- I’m sorry. I ___________ at you the other day.

--- Forget it. I was a bit out of control myself.

   A. shouldn’t shout    B. shouldn’t have shouted

   C. mustn’t shout             D. mustn’t have shouted