以下几道题,请帮忙看看参考答案的准确性,谢谢.P34~351.electronicsquicklyinrecentyears.a.developedb.developingc.hasdevelopedd.havedeveloped.参考答案为B.为何不选c.?2.Tothedinnerpartyallherwereinvited.a.re

Question

以下几道题,请帮忙看看参考答案的准确性,谢谢.P34~35
1.electronics__quickly in recent years.
a.developed b.developing c.has developed d.have developed.
参考答案为B.为何不选c.?
2.To the dinner party all her__were invited .
a.relation b.relations c.a relation d.the relations.
参考答案为D,为何不选B?
3.some __were seen loafing in the street.
a.youth b.few youth c.more youth d.youths.
参考答案为c,为何?
4. he wrote a __report.
a.two-thousand-words.
b.two-thousands-words.
c.two-thousands-words.
d.two-thousand-word.
参考答案为c,为何不选d?
5.if they confuse red and green colors__,they may be able to distinguish only by their brightness.
a.traffic signal b.traffics signal c.traffic signals d.traffics signals.
参考答案为D,为何不选c?
6.there are more_ in bristol than in any other city i know.
a.football team b.footballs tem c.footballs teams d.football teams.
参考答案为A,为何不选d?
7.lisa used to have four___.
a.boy friends b.boys friends. c.boy friend d.boy friends.
参考答案为c,为何不选a?

Answer 1

第一个,最后有in recent years,值的就是从过去到现在一直在发展,还有可能继续发展下去,你为什么要用完成时态呢?
第二个,.the 加relations值得是一类人.
第三个,系动词用的是Were说明是复数形式.