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【单选题】
命题“若 是正弦函数，则 是周期函数”的逆命题是( )A.
若 是正弦函数，则 不是周期函数
B.
若 是周期函数，则 是正弦函数
C.
若 不是正弦函数，则 不是周期函数
D.
若 不是周期函数，则 不是正弦函数
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【单选题】He was so sick that he _____ all that he had eaten. [ ]
A.
gave up
B.
brought up
C.
brought out
D.
took out
【单选题】— Jim is very sick these days. He coughs so badly. — In my opinion, he really ________ listen to the doctor and cut down on smoking.
A.
should
B.
can
C.
may
D.
need
【单选题】The Eskimo is perhaps one of the most trusting and considerate of all Indians but seems to be ______ the welfare of his animals.
A.
critical about
B.
indignant at
C.
indifferent to
D.
Subject to
【单选题】He had little education that he was not fit the job. [ ]
A.
such; for
B.
so; for
C.
such; to
D.
so; to
【单选题】— The sick man’s allowed to take a walk in the garden every day, ________? — Yes, I think so.
A.
is he
B.
isn’t he
C.
has he
D.
hasn’t he
【单选题】He is so kind a person that he takes a friendly attitude_____us.
A.
of
B.
about
C.
to
D.
on
【单选题】He was playing softly ______ disturb anyone.
A.
so as not to
B.
so as to not
C.
so not as to
D.
not so as to
【单选题】John wants to be a , so he often helps sick people in the hospital.
A.
reporter
B.
doctor
C.
scientist
D.
cook
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