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【简答题】
全球性的环境问题主要有______、______、______及______。
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反馈参考答案：
举一反三
【简答题】在橡胶中用短纤维补强时,要使胶料的性能优越,需要注意短纤维在胶料中的()、()、()。
【简答题】Dear Sirs, From the samples sent to us on May 4,we have made selections,and have the pleasure of handing you the following ordeg which we commend to your immediate and bet attention： 360 chests Black ...
【单选题】The best reporters have been sent to South Africa to ______ the 2010 World Cup, so we can get informed of the situation there very quickly.
A.
support
B.
rescue
C.
cover
D.
prevent
【单选题】“We have sent out two best players to the sports meet. What about you？” “Well, not yet. We have few ______, I’d say.”
A.
chosen
B.
to choose
C.
to be chosen
D.
to choose from
【单选题】Americans _________sent a message to the world________ we have never been a collection of Red States and Blue States: we are, and always will be, the United States of America.
A.
that, /
B.
who, that
C.
who, when
D.
that, what
【单选题】()separate cover, we have already sent you samples () various sizes of shoes.
A.
Below,of
B.
Under,of
C.
By,of
D.
By,including
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