prep上的,不难,但是有些疑惑,希望大家指点 1. How many odd integers are greater than integer x and less than the integer y? (1) There are 12 even integers greater than x and less than y. (2) There are 24 integers greater than x and less than y. ANSWER: B 这道题很怪异,也没给个范围,怎么就知道题目中问的odd integers是下面条件里的integers呢? 2.On the number line shown(一个数轴,从左至右分别是r,s,t), is zero halfway between r and s? (1) s is to the right of zero. (2)The distance between t and r is the same as the distance between t and -s. Answer: C 我认为条件(2)化简后,就可以得到r=-s, 那么这样zero就只能在r,s的中间halfway了。 谢谢大家 |