单项选择题
A．It stops working.
B．It becomes sharper.
C．It confuses odors.
D．It detects fewer odors.
- A.It
B.
B．It
C.
C．It
D.
D．It
E.
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A．They both have leg injuries.B．They are too tired to walk any further.C．They have no umbrella with them.D．They have seen no signs to give them directions.
A.They
B.
B．They
C.
C．They
D.
D．They
E. -
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A．Because they can remain healthy for a period of time.B．Because they can avoid being punished.C．Because they may be treated the same way as those who have rejected bribes.D．Because they may be pardoned and won't be sent to prison.
A.Because
B.
B．Because
C.
C．Because
D.
D．Because
E. -
单项选择题
A．They have to contact more people so as to find a new job.B．There are always downward changes in their lives.C．Many of them stand a good chance of finding new and better jobs.D．People will forget them soon.
A.They
B.
B．There
C.
C．Many
D.
D．People
E.
