请教两道DS

joywzy

25. If x and y are consecutive odd integers, what is the sum of x and y?
(1) The product of x and y is negative.
(2) One of the integers is equal to –1.

Ans: A
请问consecutive odd integers是否-3,-1,1,3,...,,请问,-3,1能否成为consecutive odd integers?
我选E
请问(1)是怎么求得XY的和呢?
14. Each M-type memory unit will increase the base memory capacity of a certain computer by 3 megabytes. What is the base memory capacity, in megabytes of the computer?
(1) 2 M-type memory units will increase the computers base memory capacity by 300 percent
(2) The memory capacity of the computer after 2 M-type memory units are added to the base memory capacity is 1.6 times the memory capacity of the computer after 1 M-type memory unit is added to the base memory capacity.

Ans : D
I choose B
请问(1)中,300percent 是base memory capacity's 300%吗?

passerr

25： 1、consecutive的解释是:following one after another without interruption; successive 2、根据（1）xy<0，可知x和y异号，所以x,y必是-1和1居其一，所以x+y可确定。 14： 是

tongxun

25、条件1）1+（-1）=0；条件2）-1+1=0，-1-3=-4

joywzy

我明白了！有时做数字题存在阅读的障碍，会影响做题。