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【简答题】
水体富营养化是因为水体中（）等植物营养物质含量高时使藻类和水生生物大量繁殖的现象；出现在近海海域称为（），发生在淡水水体中则称为（）。
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皮皮学刷刷变学霸
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【单选题】Two of the boys ________ while playing football.
A.
hurt
B.
were hurting
C.
got hurt
D.
had been hurt
【单选题】Why do American boys do better in math while girls usually excel in reading skills?
A.
Boys are interested in math while girls usually like reading.
B.
Boys have a math gene and girls have inborn reading skills.
C.
Boys get more training in math and girls get more training in reading.
D.
Boys are persupposed to be good at math and girls at reading.
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【单选题】While the boys were ice skating , they slip on the thin ice and fell into the deep A B C D water.
A.
A
B.
B
C.
C
D.
D
【单选题】Why do American boys do better in math while girls usually excel in reading skills?
A.
Boys are interested in math while girls usually like reading.
B.
Boys have a math gene and girls have inborn reading skills.
C.
Boys get more training in math and girls get more training in reading.
D.
Boys are presupposed to be good at math and girls at reading.
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