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【单选题】
If you see him, please give my apologies ______ not having written to him.A.
about
B.
of
C.
on
D.
for
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【单选题】________ means one' s ability to " link units of speech together with facility and without strain or inappropriate slowness or undue hesitation" .
A.
Linguistic competence
B.
Discourse competence
C.
Grammatical competence
D.
Fluency
【简答题】Poisson's ratio is a measure of the strain of a homogenous and isotropic material versus its strain. These strain are generally of opposite signs, that is, if one is an elongatio...
【单选题】听力原文： The systems that support life on earth are under great strain. One out of every six people depends on fish for protein yet 75 percent of the world's fisheries are over fished or fished to their ...
A.
The report, as is mentioned in the talk, is the 10th in a series.
B.
The report is published jointly by the United Nations, the World Bank, the World Resources Institute and a private environmental research group.
C.
Nine countries, including Thailand and the United States, are studied by the report.
D.
The report urges changes in decision making for care of world's natural resources.
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