题目
1. If k is an integer and 121 < k^2 < 225,then k can have at most how many values?
A. 3
B. 4
C. 5
D. 6
E. 7
答案：D.
2. Runner A ran 4/5 kilometer and Runner B ran 800 meters.
Quantity A: The distance that A ran
Quantity B: The distance that B ran
A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.
答案：C
3. x < y < z,
Quantity A: (x + y + z)/3
Quantity B: y
A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.
答案：D
4. A reading list for a humanities course consists of 10 books, of which 4 are biographies and the rest are novels. Each student is required to read a selection of 4 books from the list, including 2 or more biographies. How many selections of 4 books satisfy the requirements?
A. 90
B. 115
C. 130
D. 144
E. 195
答案：D
5. In a graduating class of 236 students, 142 took algebra and 121 took chemistry. What is the greatest possible number of students that could have taken both algebra and chemistry?
答案：121
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