There’s no way of knowing why one man makes an important discovery ___ another man, also intelligent, fails.
#11912
A
since
B
if
C
as
D
while
推荐题目
He is out of work, feeling as if he has _________ nothing.
#12120
A
established
B
accomplished
C
abolished
D
guaranteed
The new government made a promise that they would surely improve the________of people’s life.
#10615
A
outline
B
quality
C
insurance
D
attitude
As we know, the UK _____ four parts, England, Wales, Scotland and Northern Ireland.
#12743
A
is made of
B
is included
C
is consisted of
D
consists of
A post office should be built in a central ______ for the sake of the convenience.
#11665
A
position
B
situation
C
eruption
D
connection
The Chinese lunar New Year usually _____ two records: the world's most watched television gala show, and its busiest telecommunications network.
#14022
A
develops
B
witnesses
C
establishes
D
launches