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【单选题】
将n阶行列式D中所有元素都反号,形成行列式的值为()A.
0
B.
D
C.
-D
D.
D
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举一反三
【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】The author of the passage wrote this passage in order to ______.
A.
give a fair comment on Black Fiction
B.
compare various critical approaches to the subject
C.
discuss the limitations of Black Fiction
D.
summarize the major points of Black Fiction
【多选题】利用标准差比较两个总体的平均数代表性的大小，适用于（ ）。
A.
两个平均数相等
B.
两个总体的单位数相等
C.
两个平均数的计量单位相同
D.
两个平均数反映的现象性质相同
【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】Passage 2 Questions 6 to 10 are based on the following passage: Obviously television has both advantages and disadvantages. (78) In the first place, television is not only a convenient source of enter...
A.
To arouse the reader’s concern
B.
To introduce the theme of the whole passage
C.
To summarize the whole passage
D.
To state the primary uses of TV
【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...
【多选题】利用标准差系数比较两个总体平均数代表性大小的适用条件是
A.
两个平均数不等
B.
两个平均数相等
C.
两个平均数反映的现象不同
D.
两个平均数的计量单位不同
E.
两个平均数的计量单位相同
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