As there is less and less coal and oil, scientists are exploring new ways of making use of ____ energy, such as sunlight, wind and water for power and fuel.
#18985
A
original
B
alternative
C
convenient
D
staple
推荐题目
Mr Smith, looking ______, started to work out a problem.
#18305
A
puzzled, puzzling
B
puzzling, puzzled
C
puzzled, puzzled
D
puzzling, puzzling
—Are you pleased with what he has done?—Not at all. It couldn’t be _______. Why didn’t he put more effort into his work?
#18223
A
any worse
B
much better
C
so bad
D
the best
We have every reason to believe the print media are usually more and reliable than Internet.
#19646
A
accurate
B
ridiculous
C
urgent
D
shallow
Bob has a billion dollars while Kate has a million, so Kate is ________than Bob.
#19666
A
less rich
B
not richer
C
no rich
D
poorer
It may have been unusually cold recently but experts say it's ________ for this time of year.
#17676
A
normal
B
formal
C
ordinary
D
common