______environmental damage is done，it takes many years for the ecosystem to recover.
#80690
A
Eyen if
B
If only
C
While
D
Once
推荐题目
(2014·河南豫北三校高三下学期联考)Honesty is a virtue________greed is an evil，as the saying goes.
#30035
A
while
B
when
C
as
D
and
Professor Hawking stepped into the office I knew that there was no hope.
#31869
A
Unless
B
Now that
C
Although
D
The moment
She showed the visitors around the museum，the construction ________ had taken more than three years.(2011·江西)
#30492
A
for which
B
with which
C
of which
D
to which
Betty’s English is _______ than _______ in the class.
#80237
A
much better; anyone else
B
far better; anyone else’s
C
a lot better; anyone’s else
D
a great deal better; anyone’s else’s