皮皮学，免费搜题
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【简答题】
n. 协会,社团 ;联合 ;联系
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皮皮学刷刷变学霸
举一反三
【单选题】Why does the professor say this:
A.
To emphasize the negativity of the public's reaction to a certain theory.
B.
To complain about the behavior. of the scientific community.
C.
To introduce a reason for a shift in scientific opinion.
D.
To ask the students their opinion of a theory he described.
【简答题】乙烷的优势构象为 ,丁烷四种典型构象分别是 、 、 、 ;优势构象是 。
【单选题】Why does the professor say this:
A.
To praise the area's beautiful winter scenery
B.
To persuade students to build their own homes
C.
To describe the most common one of limestone
D.
To explain why so many snakes live in the region
【多选题】黄河高原地区农村社会系统进入释放阶段的原因有:
A.
“大跃进”运动，国家把工业发展放在农业前面
B.
因农村劳动力缺乏导致土地被休耕弃耕
C.
前期农业发展积累潜能被不断消耗
D.
自然灾害频繁扰动
【单选题】Why does the professor say this:
A.
To emphasize the importance of commercials
B.
To correct something that he said earlier
C.
To identify the time limits for most commercials
D.
To relate new information to a previous example
【单选题】Why does the professor mention McDonald's?
A.
To compare the quality of its food withthe quality ofUSA Today's stories.
B.
To compare the design of its restaurantswith the look ofUSA Today's pages.
C.
To compare the great success ofMcDonald's with the success of USA Today.
D.
To compare the early years of McDonald'swith the early years of USA Today.
【单选题】Why does the professor say this:
A.
To remind the students of the topic for today's session
B.
To indicate that he expects the students to read the textbook
C.
To encourage the students to participate in the discussion
D.
To demonstrate his respect for the students in his class
【单选题】Why does the man go to see his professor?
A.
He is worried about the professor's class.
B.
He wants to bring up the grade in her class.
C.
He would like some advice about his classes.
D.
He needs to get the woman's signature.
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