2021美国学术能力评估考试（SAT）真题模拟04-15

1、-9cos²θ- 9sin²θ= ______.（单选题）

A. 0

B. 1

C. -1

D. 9

E. -9

试题答案：E

2、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

3、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

4、In rectangle ABCD below, arcs BP and CP are quarter circles with centers at points A and D, respectively. If the area of each quarter circle is π, what is the area of the shaded region?
（单选题）

A. 4–(π/2)

B. 4–π

C. 8–π

D. 8–2π

E. 8

试题答案：D

5、For Rachel, "tea at the Hamilton estate" (line 25) represents ______.（单选题）

A. an awkward encounter

B. a surprising opportunity

C. an onerous duty

D. a dangerous development

E. a long-desired invitation

试题答案：B