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【判断题】
( )中央空调冷却水化学处理时常用的阻垢剂有聚磷酸盐 、有机膦酸盐和聚丙烯酸等。A.
正确
B.
错误
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【简答题】Passage Four:Questions 36 to 40 are based on the following passage.For any given task in Britain there are more men than are needed. Strong unions keep them there in Fleet Street, home of some London’...
【单选题】听力原文：W：I hear that you work part—time at a supermarket．What do you do there? M：I work in the produce section．I also stock shelves．Sometimes when it really gets busy，I help at the check out counter． Q：...
A.
He works at the meat counter.
B.
He delivers groceries to customers.
C.
He serves as a cashier.
D.
He stocks shelves.
【单选题】The reason was _____ I was busy with my work at that time.
A.
why
B.
because of
C.
that
D.
what
【单选题】I could have offered you some help last weekend, but I _______ with my work at that time.
A.
would be occupied
B.
was occupying
C.
had been occupied
D.
was occupied
【单选题】I could have offered you some help last weekend, but I ______ with my work at that time.A．would
A.
40. I could have offered you some help last weekend, but I ______ with my work at that time. A．would be occupied
B.
was occupying
C.
had been occupied
D.
was occupied
【多选题】利用标准差系数比较两个总体现象平均数代表性大小,适用于以下情况( )
A.
两者的平均数相等
B.
两者的平均数不等
C.
两者的平均数所反映的现象不同
D.
两个平均数的计量单位不同
【单选题】I first met Joe three years ago. He at a CD shop at that time. [ ]
A.
will work
B.
is working
C.
has worked
D.
was working
【单选题】Passage B The main idea of the passage is ____.
A.
The Scream is less significant in popular culture
B.
The Scream is not only important in popular culture
C.
The Scream is the whole image of popular culture
D.
The Scream is an important image used in popular culture
【简答题】Read the following passage. Answer the questions according to the information given in the passage. Bicycle rental companies in Beijing are going broken, because nobody wants to hire their services. M...
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【单选题】The reason was _____ I was busy with my work at that time.
A.
why
B.
because of
C.
that
D.
what
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