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【单选题】
By mentioning the study of IEEE Spectrum, the author intends to______.A.
prove that the danger of using cell-phone on plane does exist
B.
advocate that all airlines should provide Wi-Fi service
C.
explain how cell-phone may endanger a flight
D.
inform. readers of which devices should be allowed to use on plane
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反馈参考答案：
举一反三
【单选题】She behaved (行为）( ）she( )the boss.
A.
as； is
B.
as； was
C.
as if ； were
D.
as if ； was
【单选题】Of course she behaved awfully in front of the guests, but ______ she is much younger than him. [ ]
A.
as a matter of fact
B.
after all
C.
above all
D.
all in all
【单选题】Blair hopes that the G8 countries will work together to reduce carbon emissions
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】. It is unbelievable that a well- behaved gentleman ______ be so rude to a lady.
A.
will
B.
may
C.
must
D.
should
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