Alcohol is also classified as a downer (镇静剂), and though it is legal, it can damage the liver and do great harm if in large quantities.

A.
consume
B.
to consume
C.
consuming
D.
consumed

Not until he had left his friend _______ how important friendship was for him.

A.
did he realize
B.
he realized
C.
had he realized
D.
he had realized

I don’t believe you can do today’s job with yesterday’s methods and be in business tomorrow， ?

A.
do I
B.
don’t I
C.
can you
D.
can’t you

Michael Jordan, known as top scorer in _ NBA, did much charity work for society.

A.
a; a
B.
the; the
C.
A; /
D.
/; the

Research has been limited to production profits, rather than that GM foods are safe.

A.
increasing; make sure
B.
increasing; making sure
C.
increase; make sure
D.
increase; making sure

The chairman said in the meeting that he would be ________ towards all opinions and consider them seriously.

A.
respectful
B.
proud
C.
capable
D.
careful

Mary wrote an article on the team had failed to win the game.

A.
why
B.
where
C.
what
D.
which

________ many times，I still didn't know how to operate the machine.

A.
Having taught
B.
Having been taught
C.
Being taught
D.
Teaching

---Though Liu Qiang was able to complete in thr school spring sports, he is still our hero.
--- .

A.
I can’t agree more
B.
I can’t agree with you
C.
I can’t agree any less
D.
I don’t agree more

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