1. The survival of civilization as we know it is _C_ threat. ( i: z" y _1 L! \: |3 n A within B towards C under D upon / l" y# x# V# V" R
under threat 受到威胁。 ) Q0 U# ]8 M+ _ z; Z2. You will want two trees about ten feet apart, from _D_ to suspend your tent. $ ~. K! m2 C& z
A there B them C where D which ! _; M. o7 M( l" Y 介词 + which + 动词不定式(to do sth.) 整体做定语。 9 [7 D7 H1 H% l
本句可改写为:You will want two tress about ten feet apart, to suspend your tent from. 2 Q& Y! E, ~; u
只要见到有介词出现在空格之前,而选项中有which, them, there, where等词则应选which。 8 j& d& a4 [" o! r4 n
3. As I was just getting familiar with this job, I had _C_ to ask my boss. 中华考试网(www.Examw。com)' k2 m( ~4 I" ^& p
A many B most C much D more 0 I* d' K5 a! i6 @' h
当many没有修饰任何其他词而单独出现时表示很多人。 much在这里相当于many things。 8 [. g; g! M+ f4 Y0 q' i4. _A_ quite recently, most mothers in Britain did not take paid work outside the home. " N5 S+ R. a( x, Q3 ?; q* m A Until B Before C From D Since ) b4 o8 c6 Y- I& Q, ]
until recently 直到最近; not surprisingly 一点也不奇怪。 1 v( r8 }( {7 k9 s8 \5. In some countries, _D_ is called “equality” [平等] does not really mean equal rights for all people. & T1 b3 U2 X9 h$ ^! d8 ?. x+ w
A which B one C that D what 6 _) q! ]2 I$ h that可以引导主语从句,但只做引导词而不充当任何成分。