求教N道题

LeeTsanUID: 2787212

1.Until the current warming trend exceeds the range of normal climatic fluctuations, there will be, among scientists, considerable ___ the possibility
that increasing levels of atmospheric CO2 can cause long-term warming effects.
; {) H3 X5 Q/ K+ O7 Z(A) interest in
(B) uncertainty about
(C) enthusiasm for
; `. f- G* u2 u6 g$ X6 v1 U9 @(D) worry about
(E) experimentation on
答案是B，对until.....there will be的用法不是很明白~~~
% W" W7 T5 D; i% t  N! G
2.It is to the novelist’s credit that all of the episodes in her novel are presented realistically,without any ___ or playful supernatural tricks.
5 G& Q8 V5 L" h' X6 q( [) ~(A) elucidation
(B) discrimination
(C) artlessness
(D) authenticity
5 e, p6 \0 V  c: [% F/ x(E) whimsy
答案是C、E,不明白C为什么对~
+ K5 m1 n, e" m: N; w6 e6 @8 Q
; J0 X, g$ C8 e% P1 Q3.Regardless of what ___ theories of politics may propound, there is nothing that requires daily politics to be clear,thorough,and consistent——nothing,that is,that requires reality to conform to theory.
$ T6 ?! ~' ~6 M(A) neat
(B) vague
(C) assertive
1 l4 ~( D9 Q5 Z4 B# x1 u(D) casual
(E) vicious
( B; q% Z! P' ^- A(F) tidy
答案是AF，不明白neat表现了theory的什么特征？