——句意——
1）比较错误
A：Laos has a land area about the same as 【Great Britain】❌
2）并列错误
B：Laos has a land area of about the same size as Great Britain is, but 【in Laos there is a population of only four million】, and 【many are members of hill tribes ensconced in the virtually inaccessible mountain valleys of the north】 ❌ and并列的很不合理
D：but 【only four million in population】, and 【many are members of hill tribes ensconced in the virtually inaccessible mountain valleys of the north】❌
3）主语缺失
C：Laos has a land area that is about the same size as Great Britain's land area, but 【in Laos with a population of only four million people, many of them are members of hill tribes ensconced in the virtually inaccessible mountain valleys of the north】❌没有主语后半句
4）正确转折
E：Laos 【has a land area comparable to that of Great Britain】 but【(has) a population of only four million people】, many of whom are members of hill tribes ensconced in the virtually inaccessible mountain valleys of the north.✔

——句意——
1）比较错误
D：would 【have to know】 a great deal more than 【they do now】 about the social and economic，比较对象为【不同时间下的两件事】✔
E：would 【have to know】 a great deal more than 【now】 about the social and economic，比较对象为时间❌
由于前句没有时间状语，后句只能被理解成为【now】，而并不能理解为【省略了谓语动词】

——句意——
1）主语错误
A、B：句意均为“我arguing……”❌
应该为“Discourse arguing……”
2）平行错误
C、D：equal political and legal rights and for changes in the married women's property laws❌
E：句意里应该平行的是a treatise that argued 【for equal political and legal rights for women】and【for changes in the married women's property laws】✔

——句意——
1）主语错误
A：at some time in the past our ancestors suffered an event, greatly reducing their numbers and thus our genetic variation.
意思为：我们的祖先减少了他们的数量和基因变异❌
E：some time in the past, that our ancestors suffered an event so as to reduce their numbers greatly, and thus our genetic variation.
句意为：我们的祖先减少了他们的数量和基因变异❌
2）and 前后并不平行
C：that some time in the past our ancestors suffered an event so that their numbers were greatly reduced, and thus our genetic variation.❌
D：some time in the past our ancestors suffered an event from which their numbers were greatly reduced and thus our genetic variation.❌

meidan的概念是互斥不重复，所以只有1，2，3，7，8这五个数在集合里

做了这么多题 第10题太怪了

介词+which引导的定语从句中必须有主语

题目说了是earthquake known to have occurred near the island in A.D. 365.，所以地震一定发生了，要去验证的应该是destruction

在画数轴的时候一定要把x在左边和x在右边两种情况都画出来

一个公司的两个部门在过去的三年表现得很互补：制药部门占据了20%的销售额和40%的利润。同时化学药物部门弥补了剩下的份额（ 80%的销售额和60%的利润）
must be true:
choice c, 化学部门在每一美金的销售额上实现的利润，要低于制药部门每一美金销售额实现的利润。
choice e, 高利润药物在化学部门占了更高的比重，比起制药部门。-> opposite to the context

条件1不行的理由是这个素数可能已经被包含在20里了

这个人的逻辑链是因为人造脂肪会吸收人体必要的维他命，使得人体无法利用这些维他命，所以人们不应该吃人造脂肪。b的答案是说人造脂肪中是否含有维他命，人体能否利用维他命仍然未知。而a选项直接从根本上解决了这个问题，人体可以通过补充维他命来弥补这些被吸收的维他命，那么人体自然也就可以吃人造脂肪了

不是说‘s是用于有生命的人或动物使用的吗，为什么答案里的earth也可以用’s呢

——句意——
1）
ABC：representatives 【said】 and 【expected】❌
DE：representatives said 【that there were……】and 【that expected】✔
2）
expected the increase of piracy❌
expected piracy to increase✔

——句意——
A：句间关系：【letters were written】+modifier, 【outnumbering her letters to anyone else】前句是主句，后句是修饰句伴随状语，伴随状语表伴随，意思为一直存在，但不可能一开始就outnumbering，所以❌
——语法——
B：letters 【were written】 over a period that begins a few years before Susan's marriage to Emily's brother and 【ended】 shortly before Emily's death in 1886, 【outnumber】前两个动词并列，前两个动词与outnumber之间缺少连词，run-on

——句意——
the combination of a reliable supply of [water] and [good growing conditions] ”水“和“良好的生长环境”✔
the combination of [a reliable supply of water] and of [good growing conditions] ”水的充足供应“和”良好的生长环境“❌

——句意——
B：Plants are more efficient at acquiring carbon than Plants are more efficient at acquiring fungi
C：Plants are more efficient at acquiring carbon than fungi are more efficient at acquiring carbon

——句意——
需求改变了含盐量，从而夺取了牡蛎的味道and是牡蛎变得更小了、更没特色了、更少被需求了

——句意——
the economy might not be as weak as some analysts previously "thought" vs the economy might not be so weak as some analysts "have previously thought"
显然，句意为没有”之前预期的“那么差，而不是没有”从过去某个时间一直到现在预期的“那么差

——句意——
1.注意平行：[to form the mud or clay into bricks], and, [to lay them in the wall in mud mortar]✔
2.E选项：the method has been that这个方法是……❌
D选项： 【Ron】to do 是指具体要做的事情并强调步骤的意思，the methid has been to do这个方法是（怎么做）……✔