找准定位 Because heavier isotopes tend to be left behind when water evaporates from the ocean surfaces, the remaining ocean water becomes progressively enriched in oxygen 18. The degree of enrichment can be d
主旨题一般从原文第一句找 ： Among the myths taken as fact by the environmental managers of most corporations is the belief that environmental regulations affect all competitors in a given industry uniformly. In reality,
A选项 并没有提及不同的management problem
Until recently, zoologists believed that all species of phocids (true seals), a pinniped family, use a different maternalstrategy than do otariids (fur seals and sea lions), another pinniped family.
Zoologists had assumed that females of all phocid species, by contrast, use a fasting strategy in which mother phocids, having accumulated large energy stores before they arrive at breeding sites, fast throughout the entire lactation period
定位在这两句
两个都是在谈论效率
Theoretical literature offers conflicting views on whether nonprofit hospitals are less financially 【efficient】
The same literature offers similarly conflicting views of the 【efficiency】 of nonprofit hospitals from a social welfare perspective.
efficiency 的两个方面
因为是成对出现的，所以会误以为是另外一个对比而错选D
选项描述也较为抽象 增加了理解的难度
additional contrast→ 非效率方面的对比
a particular aspect of one of the types of 【hospitals】 discussed earlier→两个医院的另一个方面
D. Leakey's contributions to archaeology include her discovery of the earliest direct evidence of hominid activity and her painstaking documentation of
这题错了，同一句话有俩题，这一题肯定选A， D都不平行，估计毕老师吧这题和下面这题的答案搞混了，这面这题是D
In addition to her work on the Miocene hominid fossil record, Mary Leakey contributed to archaeology with her discovery of the earliest direct evidence of hominid activity and painstakingly documenting East African cave paintings.
A. Leakey contributed to archaeology with her discovery of the earliest direct evidence of hominid activity and painstakingly documenting
选项B：若将for long overdue in recognition of their outstanding bravery不加逗号地直接放在the nation’s highest military award身后，则其看起来是介词短语就近修饰名词award，整个部分皆作the Congressional Medal of Honor的同位语（即，the nation’s highest military award for long-overdue recognition of their outstanding bravery是the Congressional Medal of Honor的同位语），这是不符合逻辑的，同位语表示解释说明，其表示the Congressional Medal of Honor是专门为表彰这些士兵的勇敢而设立的最高军事奖。在逻辑上，应该是士兵们被授予这个奖，目的是为了表彰他们的勇敢；
再次，本选项的第一个词with也应该去掉，因为award A B（这的award用了被动语态，即，A be awarded B）。
条件1：公因数是2，m=2a,p=2b, a,b互质，both m and p are even. therefore, the remainder is even, so it's greater than 1.sufficient.
条件2：最小公倍数30=3*2*5，m,p的可能取值有：3，10；2，15；5，6，其中3，10的余数=1，不充分
扫描二维码，直接登录
这个题真的令人晕厥...考场上很难特别快的梳理出重点信息
fact：bettle去追insect的时候会有间歇的stop
（注意：读的时候一定要把转这类的词在心里加粗加黑！！alternative hypothesis）
解释①不能维持pace，必须要短暂的休息（补充体力）
解释②不能够很快的处理眼前的信息，追的过程中突然blind，所以要stop
题目要求：哪一种结果会support一个解释然后undermine另一个
C选项：有fixed时间间隔，说明不论飞的快慢，休息的时间都一样（默认如果解释①对的话，应该是飞的快的时候休息时间长）；一个最开始静止的虫子突然逃走了，beetle休息之后进行了加速，说明它在pause的时候确实用眼睛处理了信息
B选项：注意看到B选项的后半段就可以为C提供一些思路，但是B错就错在认为beetle处理信息是immediately的