题目内容

有关危险废物贮存设施的说法不正确的是()。

A. 基础必须防渗，防渗层为至少1 m厚的黏土层(渗透系数≤10-7cm/s)
B. 基础必须防渗，防渗层为2m厚高密度聚乙烯材料
C. 基础必须防渗，防渗层为至少2m厚的其他人工材料(渗透系数≤10-10cm/s)
D. 基础必须防渗，防渗层为2m厚高密度聚乙烯材料(渗透系数≤10-10cm/s)

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According to Paragraph 2, one traditional assumption is that people with______incomes borrow most.

A. average
B. stable
C. decreasing
D. rising

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Which of the following statements is always true according to the surveys mentioned in the

A. Consumers will put off buying things if they expect prices to decrease.
B. Consumer will spend their money quickly if they expect prices to increase.
C. The price condition has an influence on consumer behavior.
D. Traditional assumptions about earning and spending are reliable.

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The section on jokes and cartoons is______.

A. read only by children
B. of no value
C. not helpful
D. read by many

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For every course that he follows a student is given a grade, which is recorded, and the record is available for the student to show to prospective employers. All this imposes a constant pressure and strain of work, but in spite of this some students stir find time for great activity in student affairs. Elections to position in student organizations arouse much enthusiasm. The effective work of main mining discipline is usually performed by students who advise the academic authorities. Any student who is thought to have broken the rules, for example, by cheating has to appear before a student court. With the enormous number of students, the operation of the system does involve a certain amount of activities. A student who has held one of these positions of authority is much respected and it will be of benefit to him later in his career.
Normally a student would at least attend ______ classes each week.

A. 36
B. 12
C. 20
D. 15

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