A.They bring a great deal of useful experience to the university．B.They improve
A. They bring a great deal of useful experience to the university．
B. They improve human relationships in the university．
C. They bring a fear of aging among young students on the campus．
D. They improve the reputation of the university
If the world keeps on using coal as the main fuel，then__________．
A. me wanning trajectories will remain unchanged
B. Myhrvold’s study will be meaningless
C. temperatures will rise a little bit more than switching to natural gas
D. the cut in the warming speed will be significant
A.12years．B.20years．C.30 years．D.68years．
A. 12years．
B. 20years．
C. 30 years．
D. 68years．
A.thoseB.whomC.ideasD.attitudes
A. those
B. whom
C. ideas
D. attitudes
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