6. 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.
#20934
A
primary
B
alternative
C
instant
D
unique
推荐题目
---I did really well in the examination, Li Ke. ---I did _________. I got full mark.
#19407
A
no less
B
not less
C
not worse
D
no worse
Playing too many computer games is ______ to school chidren.
#19813
A
content
B
harmful
C
violent
D
religious