(2013·高考新课标全国卷Ⅰ)There’s no way of knowing why one man makes an important discovery________another man，also intelligent，fails.
#30672
A
since
B
if
C
as
D
while
推荐题目
It is an unfair thing for our students____ have devoted 12 years to preparing the exam to be beaten by those_____ use illegal methods..
#32815
A
who; 不填
B
不填，who
C
who，who
D
不填，不填
The role of Chinese Dama in the economy has been over-estimated by some western media ______ their “gold rush” has had little influence on gold prices.
#30131
A
so that
B
but that
C
now that
D
in that
The teacher never wears anything other than a suit _____ the season.
#79887
A
whatever
B
wherever
C
whenever
D
however
At last the soldiers reached ______the locals called the Golden Triangle.
#30182
A
that
B
where
C
what
D
when
—Bread ______ butter? — Bread ______no butter. thank you.
#33125
A
or, and
B
and, but
C
or, but
D
and. and