an integer in base 10 notation 十进制整数——假如10^50-74写作一个十进制的整数，那么这个整数的各个数字的总和是多少？

the Oneida这里指的是一个部落的人，是复数，正如the American, the French指一国人时是复数；如果指的是部落本身，是单数。
were the only ones没有这样的表达，只有only one没有only ones
five-nation Iroquois League是单数，five-nation是形容词
E的had没有过去的时间或动作支撑。

【不定式和ing的区别】用之于本题，给“确定繁殖时间”提供线索，不代表我们真的能确定繁殖的时间，也不代表说话者在主观上认为这个事件“会”发生（只提供了线索，哪怕这个线索是重要的，也不代表我们很快就能确定哺乳动物的繁殖时间了）。因此，应该用ing短语来表达。
🐎
to do 就是很directly的action
doing就是与这个action有关，但不是直接关系

注重中心词：E中likelihood的修饰部分，即，a particular asteroid or comet that may collide with Earth，的核心词为“一个特定的行星或彗星（a particular asteroid or comet）”。在逻辑上，应是“特定行星撞击的可能性”，而不是“特定行星的可能性”。因此，likelihood的修饰部分应用同位语从句。
而rate对应的中心词应该只有likelihood才对，但在逻辑上，真正被“打分”的对象应该是小行星撞击地球的“可能性”而不是“撞击”这个事件本身（打出来的分，肯定是某一个或几个小行星撞击的百分比嘛）。因此，rate宾语的核心词应是likelihood。

不知道20号危险不危险🙈

找modifier的关联，yet discovered 应该紧跟evidence，因为是修饰它的，between dinosaurs and birds 应该紧跟relationship
就是modifier get closer as much as possible.

unlike 需要平行结构，所以“the body's more localized response to sunburn”更符合，in which 从句需要verb，healing是动名词，不是动词，只能选has healed

🐎：
1、Since 1980, productivity improvements in manufacturing have moved the United States from a position of acute decline in manufacturing to one of world prominence.
which means 1980年以前的情况是 a position of acute decline，就是表现不好
2、prominence显赫

we have no reason to assume that the existence of a rule implies compliance with that rule.
看题目想到这里了，看了选项感觉都一样。。。

"technological determinists are supposed tobelieve, for example, that machinery imposes appropriate forms of order on society. "

求教：A中的when和B的during which有区别吗？

a kind of fat, not a fat of kind
读题不仔细，是 a kind of fat (thought to be) good

求解答c中this为什么对

overcompensating is parallel with growing, they are the modifier to the front clause
it pronouns one arm， starfish is singular species, so we cant use they.

答案B in addition to 不能算做compound plural word，所以create要用singular

请问A为什么不对？

although 表转折，连词
although clause，+整句，her third novel, modifier, bought her the wide......才是个完整的句子

1.介词后不能加句子，只能加宾语
2.Order不是虚拟语气， 虚拟语气有propose, suppose,suggest, require, request, demand,insist,

from GMAT GMAT CLUB Forum
Statement #2: this tells about the "investment of accumulated surplus premiums from previous years." Presumably, this company also sold some new premiums last year. Thus, the total revenue from premiums is unknown
have no way to know the full dollar amount of premiums last year, and even if we did know this, we would know the dollar amount paid out in claims, but we wouldn't know the other expenses that would cut into profit.
Answer = (E)

记者dimensions这个问法