．In Australia there are over 140 species of snakes, many of ______ are extremely dangerous.
#34499
A
which
B
that
C
them
D
those
推荐题目
---We’ve seen many more days of blue skies recently. ---True. But back in 1998, ________ Beijing started its “Defending the Blue Sky” program, the city only ________ about 100 days a year.
#34101
A
which, sees
B
that, saw
C
when, saw
D
and, seeing
Nobody believed a 92-year-old man could run a marathon_______he passed the finishing line. People of all ages can challenge themselves.
#30855
A
if
B
since
C
until
D
unless
—What has made him look like lacking sleep?—_______ his wife is ill and he has to get up several times a night to attend to her.
#31700
A
For
B
Because
C
That
D
What
______ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
#80600
A
Although
B
As long as
C
If only
D
As soon as
I had been puzzled over the problem for over an hour without any result, all at once a solution flashed across my mind.
#33232
A
while
B
when
C
then
D
as