12.Just as the builder is skilled in the handling of his bri

12.Just as the builder is skilled in the handling of his bricks,__ so ___ the experienced writer is skilled in the handling of his words.
A.as B.thus C.so D.while
13.______ that my mind is clear,my brain is also beginning to work much better.
A.For B.Now C.Since D.Despite
14.At first,the speaker was referring to the problem of pollution in the country,but halfway in her speech,she suddenly ______ to another subject.
A.committed B.switched C.favored D.transmitted
15.The British men are not so familiar with different cultures and other ways of doing things,is often the case in other countries in the world.
A.as B.what C.so D.that
16.We left the meeting,there obviously no point in staying.
A.was B.being C.to be D.having
17.The doctor had almost lost hope ______,but the patient finally pulled through.
A.at one point B.beside the point
C.to the point D.off the point
18._____ the calculation is right,scientists can never be sure that they have included all the variables and modeled them accurately.
A.Even if B.As far as C.If only D.So long as
19.Most of their remarks were kindly _____— with tolerance rather than bitterness.
A.made B.addressed C.taken D.received
20.A to this problem is expected to be found before long.
A.result B.response C.settlement D.solution
21.I have no objection __________ your story again.
A.to hear B.to hearing
C.to having heard D.to have heard
22.A large part of human activity,particularly in relation to the environment,is __________ conditions or events.
A.in response to B.in favor of
C.in contrast to D.in excess of
23.I’ve already told you that I’m going to buy it,_______.
A.however much it costs B.however does it costs much
C.how much does it cost D.no matter how it costs
24.The new appointment of our president _____ from the very beginning of next semester.
A.takes effect B.takes part C.takes place D.takes turns