SAT II Subject Test Math （Level 1）考试真题
1、Two iced lattes cost $5. How much does it cost for seven iced lattes?
A．$16.5
B．$17
C．$17.5
D．$18
E．$19.5
【答案】C
【文得解析】Just think: $5 for 2 iced lattes is $2.50 for 1.7 × $2.50 = $17.50. Or you can write a proportion. 
2C = 35 C = $17.50
2、What is the maximum value of the function f (x) =1/x over the interval 1/2≤x≤3/2?
A．1/2
B．3/2
C．2
D．2/3
E．Infinity
【答案】C
【文得解析】The graph of the function f(x) = 1/x has asymptotes of the y- and x-axes. As x approaches zero, the value of the function approaches infinity. Since the domain is restricted to the interval 2/1≤x ≤3/2 the maximum value of the function occurs when x = 1/2, f (x)=1/(1/2)=2.
3、If the linesl1 and l2 are parallel and are intersected by a transversal t, then what is the sum of the exterior angles on the same side of t?
A．45°
B．90°
C．180°
D．360°
E．Cannot be determined
【答案】C
【解析】Parallel lines cut by a transversal form eight angles. The exterior angles on the same side of the transversal are supplementary, so 180° is the correct answer.
4、Kate needs to complete 5 more courses—calculus, English, French, computer science, and history—in order to graduate from high school. She plans to schedule the courses during the first 5 periods of the school day, and all 5 courses are offered during each of the 5 periods. How many different schedules are possible?
A．25
B．24
C．240
D．120
E．60
【答案】D
【文得解析】Kate chooses one course out of the five for her first-period class. She chooses one course out of the remaining four for her second period class. Then, she chooses one out of the remaining three for her third period class and one out of the remaining two for her fourth period class. 5×4×3×2×1=120.
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