四战分手 7.21放狗

billyisfragile!

RC1：物种灭绝那篇，被考了5道，有问到作者应该会同意Permian period的哪种情况是正确的？构筑选了能产生硫化物的厌氧细菌剧烈繁殖，有一个关于恐龙的选项很具有迷惑性，大家遇到时仔细琢磨下；剩下几道jj答案已经很充分了。

https://www.newscientist.com/article/mg19726421-900-mass-extinctions-the-microbes-strike-back/

In the hothouse of the late Permian, temperatures at the high latitudes were barely different from those at the equator, currents ground to a halt and the ocean stagnated, ultimately causing a huge and lethal build-up of hydrogen sulphide produced by anaerobic bacteria.

FMDDD

想问构筑多少分呀？以及CR2的两个选项选哪个比较好呢...

yjysfjl

谢谢露珠，明天考，虽然肯定开盖有奖再来一瓶吧。。。。

zzzzzd

determinant 发表于 2018-7-22 12:48
建议价为X； 35% * (1-40%)X = 21%X

如果设原价为x，购买价就是35%x, 建议价就是60%x,题目问购买价是建议价的多少， 不应该是35%/60%吗？？