12北语高数,

12北语高数,

北语大学英语一作业1
1.although he was badly hurt,he ___ explain what had happened.
a.couldb.mightc.was able tod.could not
2.researchers discovered that plants infected with a virus give off a gas that ___ disease resistance in neighboring plants.
a.contractsb.acitvatesc.maintainsd.prescribe
3.i hope ___ was involved in that accident this morning was all right.
a.anyoneb.nonec.whoeverd.who
4.the lawyer advised him to drop the___,since he stands little chance to win.
a.eventb.incidentc.cased.affair
5.there is no ___ to the house from the main road.
a.accessb.avenuec.exposured.edge
6.let me write it down ___ i forget.
a.becauseb.in casec.ford.as
7.there was such a long time at the exhibition ___ we had to wait for about half an hour.
a.asb.thatc.sod.hence
8.if i were you,i ___ accept the invitation.
a.willb.wouldc.mayd.should
9.be careful while crossing the street.don’t forget ___ over by a bike the other day.
a.to knockb.to be knockedc.being knockedd.to have knocked
10.he is quite sure that it’s ___ impossible for him to fullfil the task within two days.
a.absolutelyb.exclusivelyc.fullyd.roughly
11.___ you are blind,you will not miss the astonishing changes taking place in shanghai.
a.althoughb.ifc.sinced.unless
12.speak to him slowly ___ he can understand you better.
a.in order
b.so as
c.so that
13.doing all the housework ___ my mother at least three hours a day.
a.spendsb.affordsc.occupiesd.spares
14.since it is late to change my mind now,i am ___ to carrying out the plan.
a.obligedb.committedc.engagedd.resolved
15.by ___ computation,he estimated that the repairs of the house would cost him a thousand dollars.
a.coarseb.rudec.cruded.rough
16.not knowing what to reply ___ such a question,we kept silent.
a./b.toc.withd.on
17.the article suggests that when a person ___ under unusual stress he should be especially careful to have a well-balanced diets.
a.isb.werec.bed.was
18.reading ___ the lines,i wold say that the *** are more worried than they will admit.
a.behindb.betweenc.alongd.among
19.have you had any ___ experience for this job?
a.beforeb.previouslyc.previousd.long ago
20.the house isn't big enough for a family of four,and ___,the price is not reasonable.
a.even thoughb.furthermorec.therefored.however
21.by law,when one makes a large purchase,he should have ___ opportunity to change his mind.
a.accurate
b.urgentc.excessived.adequate
22.he has difficulty ___ the word.
a.to pronounceb.for pronouncingc.pronouncingd.of pronouncing
23.the ___ runner can run 2miles in fifteen minutes.
a.commonb.usualc.averaged.general
24.the general store sells clothing and many other things ___ food.
a.in additionb.except forc.apart fromd.beside
25.you ___ drive carefully.the roads are wet.
a.had betterb.would ratherc.wouldd.had better to