以下几道题,请帮忙看看参考答案的准确性,谢谢.P34~35
1.electronics__quicklyinrecentyears.
a.developedb.developingc.hasdevelopedd.havedeveloped.
参考答案为B.为何不选c.?
2.Tothedinnerpartyallher__wereinvited.
a.relationb.relationsc.arelationd.therelations.
参考答案为D,为何不选B?
3.some__wereseenloafinginthestreet.
a.youthb.fewyouthc.moreyouthd.youths.
参考答案为c,为何?
4.hewrotea__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.iftheyconfuseredandgreencolors__,theymaybeabletodistinguishonlybytheirbrightness.
a.trafficsignalb.trafficssignalc.trafficsignalsd.trafficssignals.
参考答案为D,为何不选c?
6.therearemore_inbristolthaninanyothercityiknow.
a.footballteamb.footballstemc.footballsteamsd.footballteams.
参考答案为A,为何不选d?
7.lisausedtohavefour___.
a.boyfriendsb.boysfriends.c.boyfriendd.boyfriends.
参考答案为c,为何不选a?