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1.75亿学生的选择
这道题怎么做?同济高等数学上册第四单元第四节218页第十三题. &&
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解：不可能的.
5×5÷5÷5=1
5÷5+5÷5=2
5-(5+5)÷5=3
(5×5-5)÷5=4
(5-5)×5+5=5
...
1+1+3×4+5×6+7×8=100
[(1+1)×3+4]×5+6×7+8=100
(11-3-4)×5×(6+7-8)=100
(-1-1+3×4)...
85÷(35÷7+12×3)=2 把35和7 还有 12和3放到一起 说明他们两组至少有一组是要计算相除的
答: 鱼腥草（干品）75克、红枣15粒，水3000毫升
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就是问你这篇文章主要说什么，类似：The passage is primarily concerned with我整篇文章都知道什么意思，其他题目都做对，就是碰到这种题型就错，不知道有没有人克服这类问题的。举个例子：Prior to 1965 geologists assumed that the two giant rock plates meeting at the San Andreas Fault generate heat Line through friction as they grind past each (5) other, but in 1965 Henyey found that temperatures in drill holes near the fault were not as elevated as had been expected. Some geologists wondered whether the absence of (10) friction-generated heat could be explained by the kinds of rock com- posing the fault. Geologists’ pre-1965 assumptions concerning heat gen- erated in the fault were based on (15) calculations about common varieties of rocks, such as l but “weaker” materials, such as clays, had already been identified in samples retrieved from the fault zone. Under (20) normal conditions, rocks composed of clay produce far less friction than do other rock types. In 1992 Byerlee tested whether these materials would produce friction (25) 10 to 15 kilometers below the Earth’s surface. Byerlee found that when clay samples were subjected to the thou- sands of atmospheres of pressure they would encounter deep inside the (30) Earth, they produced as much friction as was produced by other rock types. The harder rocks push against each other, th in other words, pressure itself, not only the (35) rocks’ properties, affects frictional heating. Geologists therefore won- dered whether the friction between the plates was being reduced by pockets of pressurized water within the fault that push the plates away from each other 1.The passage is primarily concerned with A.evaluating a method used to test a particular scientific hypothesis B.discussing explanations for an unexpected scientific finding C.examining the assumptions underlying a particular experiment D.questioning the validity of a scientific finding E.presenting evidence to support a recent scientific hypothesis
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OA是B，可我选E
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就是问你这篇文章主要说什么，类似：The passage is primarily concerned with我整篇文章都知道什么意思，其他题目都做对，就是碰到这种题型就错，不知道有没有人克服这类问题的。举个例子：Prior to 1965 geologists assumed that the two giant rock plates meeting at the San Andreas Fault generate heat Line through friction as they grind past each (5) other, but in 1965 Henyey found that temperatures in drill holes near the fault were not as elevated as had been expected. Some geologists wondered whether the absence of (10) friction-generated heat could be explained by the kinds of rock com- posing the fault. Geologists’ pre-1965 assumptions concerning heat gen- erated in the fault were based on (15) calculations about common varieties of rocks, such as l but “weaker” materials, such as clays, had already been identified in samples retrieved from the fault zone. Under (20) normal conditions, rocks composed of clay produce far less friction than do other rock types. In 1992 Byerlee tested whether these materials would produce friction (25) 10 to 15 kilometers below the Earth’s surface. Byerlee found that when clay samples were subjected to the thou- sands of atmospheres of pressure they would encounter deep inside the (30) Earth, they produced as much friction as was produced by other rock types. The harder rocks push against each other, th in other words, pressure itself, not only the (35) rocks’ properties, affects frictional heating. Geologists therefore won- dered whether the friction between the plates was being reduced by pockets of pressurized water within the fault that push the plates away from each other 1.The passage is primarily concerned with A.evaluating a method used to test a particular scientific hypothesis B.discussing explanations for an unexpected scientific finding C.examining the assumptions underlying a particular experiment D.questioning the validity of a scientific finding E.presenting evidence to support a recent scientific hypothesis -- by 会员 waterlemonseed ( 13:09:19)
这类型的题目是考文章主旨：你看，文章是不是说了这么一个事~：1965年前的时候有人说两个板块会摩擦生热，有个人试了一下，发现事实不是这样的（unexpect）。然后有人来解释说可能是clay造成的。又有个人又进行了个实验，发现和clay又无关。结果其他人就继续猜........这样这个主旨题是不是就很明显了？没很具体的说任何一个解释，而是一个一个的提出，一个一个的讨论否定。
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嗯，您这么一说，好像就是了，有时候会不会经常在两个答案之间徘徊？如果是在两个答案之间不确定，有没有什么好方法？
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嗯，您这么一说，好像就是了，有时候会不会经常在两个答案之间徘徊？如果是在两个答案之间不确定，有没有什么好方法？-- by 会员 waterlemonseed ( 5:43:17)
这样的话应该要分情况了，毕竟可能是理解不到位，也有可能是选项比较模糊。
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据说新东方有些可以看题不用看文章的办法，可行吗？
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据说新东方有些可以看题不用看文章的办法，可行吗？-- by 会员 waterlemonseed ( 13:53:10)
不可行，我不建议~
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抓住文章逻辑框架观点：1965年以前，地理学家们假设两块巨大的岩石版块在SAF相遇，并摩擦中生热发现：H发现在SAF边的温度并没有预期中的高于是，引出第一种解释：因为有CLAY的存在，温度不够高第二种解释：压力解释说这样这几考题都明了了啊！
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首先，先判断文章的类型，读了第一段之后可以确定，此文为新老观点型其次，确定文章的TOPIC SENTENCE.在GMAT的阅读中，文章的起承转合非常重要，主要体现在however, but, yet, although &这四个词上But 在两个地方需要警觉1. 出现在一段之首，说明这一段有历史性大转折，和前段所讲的内容完全不是一个范畴，比如一个全新的观点，本文符合此规律 but in 1965 Henyey found thattemperatures in drill holes near thefault were not as elevated as hadbeen expected.为本文的TS(TOPIC SENTENCE)即解答了.The passage is primarily concerned with B.discussing explanations for an unexpected scientific finding （but in 1965 Henyey found that temperatures in drill holes near the fault were not as elevated as had been expected.的同意替换）
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waterlemonseed 发表于
据说新东方有些可以看题不用看文章的办法，可行吗？
BULL SHIT!!!!!!!!!!!!!!!!!!
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1.75亿学生的选择
这道题怎么做？欢欢和乐乐从学校同时出发回家，当欢欢走了一半时，乐乐离家还有480米。照这样计算，欢欢到家时，乐乐还有全程的七分之一没走，学校到乐乐家有多远？
坑洼uhPM52NO61
答：欢欢到家时，乐乐走了1-1/7=6/7所以：欢欢走了一半时，乐乐走了(6/7)÷2=3/7剩余1-3/7=4/7没有走所以：全程=480÷(4/7)=840米学校到乐乐家全程为840米算式：480÷[1-(1-1/7)÷2]=840米
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