To reduce emissions of greenhouse gases, many countries are increasing the use of natural gas, wind and other forms of _______ energy.
#17844
A
abandoned
B
original
C
alternative
D
precious
推荐题目
I think it quite _____ that you will finish the work on time if you work hard.
#18278
A
probably
B
certainly
C
likely
D
possibly
(2009陕西宝鸡质检)People eat vegetables per person today as they did ten years ago.
#20833
A
as twice many
B
as twice as many
C
twice as many as
D
twice as many
The young violinist is very excited because the concert given by him has never been _____.
#18209
A
successful
B
more successful
C
most successful
D
the most successful
There was a (an) __________ silence between us after we were left alone in the sitting-room.
#18948
A
awkward
B
angry
C
adequate
D
patient
We can’t ____ the punctual arrival of trains in foggy weather.
#18962
A
be sure
B
guard
C
guarantee
D
make sure