A选项：现在分词短语outnumbering her letters to anyone else是伴随状语。其逻辑主语为Emily Dickinson's letters to Susan Huntington Dickinson。依图形背景原则，ED是在给SHD写信的过程中超过给其他人的信的（不可能写第一封信的时候就超过了给别人信的数量），因此，写信应为背景，“在数量上超过”应为图形。
关注问题的问法：Which of the following would most likely help reveal the pattern of the official's administrative service?
注意是help reveal，帮助揭示，可以理解成为了回答这个人到底是同时为四个人工作，每个城市住一段时间，还是一个一个来的的问题，现在有5个东西摆在你面前，你选哪一个？ 没说那个东西就一定能回答你，比如这份职业记录里就没提他是为谁工作，只记录了工作内容。但尽管如此，出于常理考虑，你选这个东东比选其他东东更有可能揭示答案/help reveal。
this is what choice (a) does. if the uranium on land is being depleted, then extracting uranium from seawater will become "commercially viable", out of pure necessity. the cost will go up, but that's the breaks.
choice (c) doesn't actually affect the argument at all, because the argument already acknowledges that uranium will become commercially viable IF the price comes down.
the argument says
until the cost of extracting uranium from seawater can somehow be reduced, this method of obtaining uranium is unlikely to be commercially viable.
in other words, the argument is saying that the ONLY WAY that seawater extraction will be commercially viable is if the cost of that extraction comes down.
to weaken the argument, then, you need to find ANOTHER way in which seawater extraction will be commercially viable, WITHOUT a cost reduction.
A/B，that修饰equipment，是单数，不能用are
A/D的that指代the amount of energy，that/where/who等可以指代一个特定的名词也可以指代复合名词整体。
B/C/E的it指代the amount of energy used by visible equipment，错误。it/they完整指代整个复合名词。
ron: choice b contains an unacceptable ambiguity: the modifying phrase 'depending on its mass' is clearly supposed to what the star is doing, but, in choice b, it could technically also refer to passing through a red giant stage. (in other words, one could read the sentence as though the star's passing through a red giant stage depends upon the star's mass).
即不是谁的mass的问题而是depending在可能变成修饰从句的动词，不知道有没有回答到你的问题
idiom: there were no X's or Y's.
(A) were no Jane Austens or Brontë sisters ("were" works with both items because they're both plural)
(C) was not Jane Austen nor the Brontë sisters (singular "was" doesn't work with plural "sisters")
We can eliminate options C, D, & E because they use a singular verb with the plural Brontë sisters.
There were no Xs or Ys = CORRECT
There were not Xs or Ys = INCORRECT
扫描二维码，直接登录
2*2*2 = 8 ways
OR
3C3 *2 + 3C1*2C2*2 = 2 + 6 = 8