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【判断题】
在作品与环境之间应以环境为主。
A.
正确
B.
错误
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举一反三
【单选题】Thirteen and eighteen is _____________. [     ]
A.
thirty-one
B.
thirty one
C.
five
【简答题】A.About four thirty. B.About five thirty. C.About three thirty. D.About three,
【简答题】影响反应速率的因素主要有 、 、 、 四种。
【简答题】影响化学反应速率的因素主要有 、 和 。
【判断题】不可比产品不属于商品产品
A.
正确
B.
错误
【单选题】I have ___________ pencil-cases. [     ]
A.
thirty one
B.
thirty five
C.
thirty-five
【单选题】Twenty-one plus sixteen equals . [     ]
A.
 thirty-six
B.
 thirty-eight
C.
 thirty-seven
【单选题】I usually exercise __________.
A.
about at ten thirty 
B.
at about ten thirty
C.
at ten thirty about
【单选题】He played golf _____. [     ]
A.
about thirty years
B.
for thirty years
C.
thirty years before
D.
for long time
【单选题】There are _____ boys in my class. [     ]
A.
thirty two
B.
thirty and two
C.
thirty-two
D.
thirty-and-two