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【判断题】
电子的亲和能和电离能都是只从一个方面反映孤立气态原子获得和失去电子的能力,电负性则反映了化合态原子吸引电子能力的大小
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】The principle purpose of this passage is to ______
A.
talk about the American culture in transition
B.
criticize the American culture
C.
state the absurdity of American culture
D.
talk about the inventions and discoveries
【判断题】,马氏体的显微组织中,含碳量低马氏体断面形状呈针状,其硬度高而脆性大。
A.
正确
B.
错误
【单选题】What does the passage mainly talk about?
A.
How American goods axe produced.
B.
How American consumers buy their goods.
C.
How American economic system works.
D.
How American businessmen make their profits.
【单选题】It is reported that Latin American customers talk ______ on the phone as people in North America.
A.
two to four times as long
B.
two times four as long
C.
two to four time as long
D.
two to four times longer
【单选题】If an American is invited to talk something about entertainment industry, he or she might not mention ______.
A.
Broadway
B.
Oscar
C.
Grammy
D.
West Point
【单选题】If an American is invited to talk something about entertainment industry, be or she might not mention______.
A.
Broadway
B.
Oscar
C.
Grammy
D.
West Point
【单选题】The principal purpose of this passage is to______.
A.
talk about the American culture in transition
B.
criticize the American culture
C.
state the absurdity of American culture
D.
talk about the inventions and discoveries
【单选题】What is the topic of the talk?
A.
American society.
B.
Life of American farmers.
C.
Agriculture of America.
D.
Thomas Jefferson's dream.
【单选题】请问下列化合物属于哪种结构类型?
A.
二萜类生物碱
B.
三萜类生物碱
C.
甾体类生物碱
D.
胆甾烷类生物碱
【单选题】There will be a talk ____ American history this afternoon. [     ]
A.
for
B.
on
C.
in
D.
with
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