sat数学真题及答案解析(2)
很多学生们在备考SAT数学是都会选着刷题来提升自己,那么如何正确的刷题呢?今天上海新航道为大家准备了sat数学真题及解析,赶紧做起来吧!
sat数学真题
1. The distance from town A to town B is five miles. C is six miles from B. Which of the following could be the distance from A to C?
I 11
II 1
III 7
A. I only
B. II only
C. I and II only
D. II and III only
E. I, II, or III.
sat数学答案Correct Answer: E
sat数学真题解析:
Do not assume that AB and C are on a straight line. Make a diagram with A and B marked 5 miles apart. Draw a circle centered on B, with radius 6. C could be anywhere on this circle. The minimum distance will be 1. and maximum 11. but anywhere in between is possible.
2. √5 percent of 5√5 =
A. 0.05
B. 0.25
C. 0.5
D. 2.5
E. 25
Correct Answer: B
sat数学真题解析:
We can write the statement mathematically, using x to mean ‘of’ and /100 for ‘per cent’. So ( √5/100) x 5√5 = 5 x 5 /100 = 0.25
3. If pqr = 1 , rst = 0 , and spr = 0. which of the following must be zero?
A. P
B. Q
C. R
D. S
E. T
Correct Answer: D
解析:
If pqr = 1. none of these variable can be zero. Since spr = 0 , and since p and r are not zero, s must be zero. (Note that although rst = 0. and so either s or t must be zero, this is not sufficient to state which must be zero)