296.Having said he would mend the clock,he discovered that he had not brought the_____tools for the job.
A.concise B.correct C.right D.precise
[答案]C.right.
[注释]right适当的，恰当的:He is the right man to do the job。(他是干这项工作的合适人选)concise简明扼要的，correct正确的；exact确切的：exact time确切的时间，exact age确切的年龄，exact weight确切的重量；exact weight确切的重量；exact information确切的信息；exact cause确切的原因；exact meaning确切的意思。
297.Radium salts,which have been found to_____in bones,give rise to cancers of the bone.
A.pile up B.build up C.keep up D.pull up
[答案]B.build up.[注释]build up(=accumulate)积累。pile up堆积。keep up保持，维持。pull up停车。
298.It has been laid down that each student must_____a composition to the teacher once a week.
A.turn in B.give up C.put forward D.bring out
[答案]A.turn in.[注释]turn in(=hand in)上交。
299.Our house is the most_____one in the street;it is painted red.
A.permanent B.indifferent C.predominant D.prominent
[答案]D.prominent.
[注释]prominent突出的；突起的。indifferent漠不关心的；permanent永久的；predominant占优势的，主要的。
300.I shall take you back to Beijing_____you are well enough to travel.
A.presently B.promptly C.immediately D.shortly
[答案]C.immediately
[注释]immediately(=directly)作连词用，意为“一……就……”，相当于as soon as.
