请该出以下英语问题的答案及解析

题目

请该出以下英语问题的答案及解析
1,Although many people view conflict as bad ,conflioct is sometimes useful ____it forces people to test the relative merits of their attitudes and behaviors.
A.by which B.to which C.in that D.so that
2,They decided to chase the cow away ____it did more damage.
A.unless B.until C.before D.although
3.Most parents encourage their children to take an active part in social events,____those events do not interfere with their studies.
A.lest B.though C.unless D.provided
4.I think I was at school ,____I was staying with a friend during the vacation when I heard the news.
A.or else B.and then C.or so D.even so
5,Although he knew little about the large amount of work done in the field ,he succeeded____other more well-informed experimenters failed.
A.which B.that C.what D.where
6.I felt somewhat disappointed and was about to leave,____something occurredwhich attracted my attention.
A.unless B.until C.when D.while
7.You see the lightning ____it happens ,but you near the thunder later.
A.the instant B.for an instant C.on the instant D.in an instant
8,A man escaped from the prison lase night .It was a long time ____the guards discovered what had happened.
A.before B.until C.since D.when
9,Doing your homework is a sure way to improve your test scores ,and this is especially ture____it comes to classroom tests.
A.when B.since C.before D.after
10,I was advised to arrange for insurance ____I need medical treatment.
A.so that B.in case C.although D.nevertheless

答案

1,Although many people view conflict as bad ,conflioct is sometimes useful _in that___it forces people to test the relative merits of their attitudes and behaviors.
A.by which B.to which C.in that D.so that
(in that相当于 because)
2,They decided to chase the cow away __before__it did more damage.
A.unless B.until C.before D.although
在牛造成更多破坏之前就把他赶走
3.Most parents encourage their children to take an active part in social events,__though__those events do not interfere with their studies.
A.lest B.though C.unless D.provided
句中需要一个尽管意思的词,A是以免,C是除非,D是倘若
4.I think I was at school ,__or else__I was staying with a friend during the vacation when I heard the news.
A.or else B.and then C.or so D.even so
要么要么的意思 or else是否则
5,Although he knew little about the large amount of work done in the field ,he succeeded__where__other more well-informed experimenters failed.
A.which B.that C.what D.where
succeded in the fields(where)
6.I felt somewhat disappointed and was about to leave,_when___something occurredwhich attracted my attention.
A.unless B.until C.when D.while
be doing/do sth.,when ...表示在干什么或者将要干什么的时候,突然.
7.You see the lightning _the instant___it happens ,but you near the thunder later.
A.the instant B.for an instant C.on the instant D.in an instant
the instant 引导一个时间状语从句
8,A man escaped from the prison lase night .It was a long time __before__the guards discovered what had happened.
A.before B.until C.since D.when
it's a long time before很长时间后才.
9,Doing your homework is a sure way to improve your test scores ,and this is especially ture__when__it comes to classroom tests.
A.when B.since C.before D.after
when it comes to=speaking of 谈到说到的意思
10,I was advised to arrange for insurance _in case___I need medical treatment.
A.so that B.in case C.although D.nevertheless
in case表示万一,代入句子变明白了