解题钥匙实际上来自于对bottom line的理解。在经济学中，bottom line专指净收益，意思等同于net income。所以答案必须跟钱有直接关系。根据界定技巧的“简化意群”，第一段说的是客户，第二段才提到了钱，因为这句话：“ Clearly price promotions are generally run at a loss, otherwise there would be more of them. And the bigger the increase in sales at promotion prices, the bigger the loss. ”换句话说，促销会带来收入的损失，这才是effects on bottom line的出处。
---解析来自考满分

哇！有 OG2018 啦！？

类比？答案是E不

答案是C，milepost两边数字都是倒数的

在(D)(E)中，比较的两者为时态有误，应该用完成时而不是过去时，属于比较对象不对等。

请问老师A选项those 改成that 是否算正确选项

好吧 居然做对了

老师求更新啊TAT 每次做这类型题目错超多.....八成就是没看你做的表......

D选项是说运动员的肌肉重吸收氧气的量是固定的，从常识来讲都不可能对啊，每个人体内的乳酸含量都不是一定的啊，多走几步路乳酸就增加了，重吸收的氧含量就高了，在家睡着肌肉没乳酸重吸收氧肯定少，选项里可给出明确的时间限制啊

选对了，但我想讨论是否A可以看做是个weaken啊？A是句子开头的背景的一个反例Most stars are born in groups of thousands, each star in a group forming from the same parent cloud of gas，如果考点是问削弱，是不是A就可以选了？

可否再解释一下C选项，to do和be able to do 不是并列的关系么

C: It might be possible that female rhinos without the radio collars can be tranquilized more than the females with collars for other purpose and hence the tranquilizer is not responsible for the reduction in fertility, there might be some other reason why the fertility has been decreased..

答案是啥啊，看不到啊

没懂D错在哪里~求解释~B的as many感觉好奇怪啊

想问一下，although前面的逗号是不是可加可不加

老师，为什么B选项不可以呢？发展经济会导致交通堵塞，就要修路，矛盾点在于发展经济得到的税收不足以弥补修路的支出。B是说可以让居民住在附近，居民步行前往，那就不会导致交通堵塞了呀……为什么不对呢？

A 选项不正确 因为文中已经指明 proportion of new cars in Donia's capital city has always been comparatively high， 所以不存在 ”城里多是没有减排的老车，新车即使1993之后还是少，所以减排不明显“ 的情况。

C. The nutritional content of emmer wheat is irrelevant to the question of where it was first domesticated.
D. Correct. If climate conditions have not changed much in the strip, it's unlikely that the natural geographical growing range of wild emmer wheat has shifted. Therefore, it's more likely that wild emmer wheat has grown only in the same strip since it was first cultivated.