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【单选题】
______ it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal．
A.
When
B.
As
C.
While
D.
Before
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【单选题】Leaves are found on all kinds of trees, but they differ greatly________size and shape.[ ]
A.
on
B.
from
C.
by
D.
in
【单选题】_______is no good always complaining about life．At least, we are living.
A.
It
B.
There
C.
This
D.
That
【单选题】—The train is due to leave at 7：50.—________ we fail to arrive there in time?—I'm afraid you'd better go in a hurry.
A.
What if
B.
As if
C.
Even if
D.
Only if
【单选题】We couldn’t have picked ______ day for the picnic — it rained nonstop．We couldn’t have picked ______ day for the picnic — it rained nonstop.
A.
a worse
B.
a worst
C.
the worse
D.
the worst
【单选题】Train services are usually ________ and run regularly every day. [ ]
A.
reliable
B.
reasonable
C.
flexible
D.
comfortable
【单选题】It is quite often that the workers are always ________ by heat if they work outdoors for a long time in the hot summer afternoon.
A.
astonished
B.
depressed
C.
overcome
D.
hit
【单选题】The new laws___________reducing the heavy traffic have come into___________.
A.
aiming at ; use
B.
are aimed at; effect
C.
aimed at; affect
D.
that are aimed at; effect
【单选题】I _____ ping-pong quite well, but I haven't had time to play since the new year. [ ]
A.
will play
B.
have played
C.
played
D.
play
【单选题】Uncle George didn’t ______ until he was nearly fifty.
A.
settle down
B.
put down
C.
sit down
D.
turn down
【单选题】_____ he had not hurt his leg, John would have won the race. [ ]
A.
If
B.
Since
C.
Though
D.
When