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[Issue Essay]

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题目:

Analytical!

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答案:

提问:

Most of the world's supply of uranium currently comes from mines. It is possible to extract uranium from seawater, but the cost of doing so is greater than the price that uranium fetches on the world market. Therefore, until the cost of extracting uranium from seawater can somehow be reduced, this method of obtaining uranium is unlikely to be commercially viable. Which of the following would it be most useful to determine in evaluating the argument? A.Whether the uranium in deposits on land is rapidly being depleted B.Whether most uranium is used near where it is mined C.Whether there are any technological advances that show promise of reducing the cost of extracting uranium from seawater D.Whether the total amount of uranium in seawater is significantly greater than the total amount of uranium on land E.Whether uranium can be extracted from freshwater at a cost similar to the cost of extracting it from seawater

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解答: sysadmin

提问:

These days, publishers in Ramistan of glossy Western-style magazines rarely need to worry about interference from the government — the magazines’ content promotes consumption, and convincing Ramistan’s emerging middle class to spend their money is a key component of domestic policy. 想问选项A的and convincing是修饰谁的呢?修饰content的话为什么可以在前面加and? 选项C为什么语法不正确呢?

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解答: 金栩竹老师

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解答: 徐小梅老师

提问:

plums are 75% water. prunes are 15% water. how much water must be evaporated for x kg of prunes? 这是我今天考场上的题,好像做错了。我乱选了(85x/15) 其他选项有各种 25x/85,15x/75什么的。应该怎么做?

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解答: 徐小梅老师

提问:

一辆车,车轮上有一点离圆心 d cm,车子前进 D cm,问该点距离/车子前进的距离? 1. d等于一个值 2. D等于一个值

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解答: 徐小梅老师

提问:

Shoppers at Retailer R who purchased substitute items from other manufacturers on DayI paid a total amount that was approximately 78 of the total shoppers would have paid had each of them been able to purchase ProductXon Day 1. “was 和 would have paid ”都在一个从句里,怎末会有两个谓语动词?“had each of them been able to...”这部分是跟谁啊?看不懂

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解答: 徐小梅老师

提问:

On his drive to work, Leo listens to one of three radio stations, A, B, or C. He first turns to A. If A is playing a song he likes, he listens to it; if not, he turns to B. If B is playing a song he likes, he listens to it; if not, he turns to C. If C is playing a song he likes, he listens to it; if not, he turns off the radio. For each station, the probability is 0.30 that at any given moment the station is playing a song Leo likes. On his drive to work, what is the probability that Leo will hear a song he likes? 这个题目的0.3为什末代指在A station 播放到了自己喜欢的?不太理解0.3到底指的是甚麽

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解答: 徐小梅老师

提问:

提问叶老师,这个题我不太理解为什么appear要用单数? D选项,what 指什么?from what 这个倒装正常语序应该怎么写?

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提问:

等腰直角三角形的周长为:16+16√2 ;问斜边的长度 等腰直角三角形的非直角边一样长:那设为x 所以斜边就为(根据勾股定理)x√2 所以周长:x+x+√2 x=16+16√2 2x+√2 x=16+16√2 X=8√2 斜边就等于:16 问题:X=8√2 是怎么算出来的?

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解答: 徐小梅老师

提问:

为什么算到这一步(3^2-2^2)(3^2+2^2)(3^4+2^4)就能直接算答案了(答案:5x13x97),难道有4次方的地方不继续化简吗?我怎么知道要把公式简化到哪一步?

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解答: 徐小梅老师

提问:

老师好 我这道题的方法就是解二次方程,只有唯一正解才能证明是充分的。(我发现很多应用题都是这样)但是我发现解二次方程很浪费时间,考试的时候可能没那么充分的时间,怎么办呢?这道题还有更好的方法吗?谢谢老师

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解答: 徐小梅老师

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