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2021美国学术能力评估考试(SAT)真题模拟09-15

发布时间: 2021-09-15 07:53:02

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1、Circles O and P intersect at exactly one point, as shown in the figure above. If the radius of circle O is 2 and the radius of circle P is 6, what is the circumference of any circle that has OP as a diameter?(单选题)

A. 4π

B. 8π

C. 12π

D. 16π

E. 64π

试题答案:B

2、Three fair coins are tossed at the same time. What is the probability that all three coins will come up heads or all will come up tails?(单选题)

A. 1/8

B. 1/6

C. 1/4

D. 1/3

E. 3/8

试题答案:C

3、If 70% of the bananas in a particular harvest had an average (arithmetic mean) length of 7 inches and 30% of the bananas in that harvest had an average (arithmetic mean) length of 5 inches, what was the average (arithmetic mean) length, in inches, of all of the bananas in the harvest?(单选题)

A. 6.0

B. 6.2

C. 6.4

D. 6.6

E. 6.8

试题答案:C

4、If (2y+ k) 2 =4y2-12y+ k2, what is the value of k?(单选题)

A. 3

B. 1

C. -1

D. -2

E. -3

试题答案:E

5、Where is the best place to insert the following sentence? Incentives are used to influence people in many walks of life.(单选题)

A. after sentence 2

B. after sentence 3

C. after sentence 4

D. after sentence 5

E. after sentence 6

试题答案:B

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