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.
#18252
A
abrupt
B
alternative
C
authentic
D
abstract
推荐题目
It is wise to put milk on a shelf close to the bottom because it is especially _______ to temperature changes
#18124
A
flexible
B
fundamental
C
sensitive
D
positive
—Why are you smiling at me?— You look ______ in that hat.
#18482
A
accurate
B
original
C
positive
D
absurd
According to the latest research, getting enough sleep is _____ to maintaining good health and reducing stress.
#18963
A
essential
B
promising
C
special
D
sensible
—George is a wise person .—But in my opinion , he is than wise .
#20339
A
cleverer
B
braver
C
more brave
D
less brave
My father will have a holiday next month. He'll take me to Qingdao.
#34894
A
ten days
B
ten day's
C
ten-days
D
ten-day