（本文內容出自維夕教育團隊原創，未經允許不得引用轉載，不得用於其他商業用途）
哈哈哈，看完今天這篇文章你還不會寫 GRE Argument 作文，你來打我，我把手寄給你幫你去考試算了！看標題就知道，7天速成作文，咱們一天來一篇學習好了，進度不要那麼趕，主要是得好好消化！不然會一團漿糊，噎死啦！
GRE考試中會遇到兩道寫作題，Argument+Issue，要求考生在30分鐘之內各自完成一篇。
於國內考GRE的童鞋來說，GRE寫作是所有科目裡表現最差的，據ETS官方發佈的最新GRE年度報告顯示，咱們國內考生GRE寫作的平均分是3.1，只超過了全球18%的考生，作文拿滿分的概率非常低（當然作文拿6分的大神確實有，但是對於普通考生來說真的是難於上青天）。
於是，很多童鞋在備考GRE作文的時候都會非常迷茫，
不復習吧，寫作分數就很有可能成為自己申請的絆腳石；
複習吧，又會消耗大量的時間，還不如多花點時間在Verbal上。
這就導致很多童鞋，在整個GRE備考期間，都在忙著搞閱讀詞彙，寫作幾乎是裸考的，結果到了要上“戰場”時，都依然不懂得如何快速搞定GRE作文。
最後V和Q都考了325+，但是一看作文gg了：2.5分臥槽？？！!
然後又不得不再考一場GRE，多花一次考試報名費...
最要命的是還要繼續來一次要命的GRE複習，還不一定考得比之前好...害，說多了都是淚奔。這樣的例子真的屢見不鮮了。
其實，GRE作文的複習是有技巧的，可不是單純地背單詞、背模板就能得高分的哦！！
你想想：
因為如果Argument考6分滿分的話，Issue你就是瞎寫，也有2分吧？2+6=8，取平均分，那你的GRE作文至少都有4分了！所以Argument一定要爭取滿分6分！
更何況，搞定了GRE作文，你才有更多的時間去搞閱讀和填空！
之前已經給大家發過第一、二、三、四篇啦，學習一定要有一個完整的系統，今天是第五篇的訓練哦：
The following appeared as part of a letter to the editor of a scientific journal.
"A recent study of eighteen rhesus monkeys provides clues as to the effects of birth order on an individual's levels of stimulation. The study showed that in stimulating situations (such as an encounter with an unfamiliar monkey), firstborn infant monkeys produce up to twice as much of the hormone cortisol, which primes the body for increased activity levels, as do their younger siblings. Firstborn humans also produce relatively high levels of cortisol in stimulating situations (such as the return of a parent after an absence). The study also found that during pregnancy, first-time mother monkeys had higher levels of cortisol than did those who had had several offspring."
Write a response in which you discuss one or more alternative explanations that could rival the proposed explanation and explain how your explanation(s) can plausibly account for the facts presented in the argument.
要求：
1）完整寫首段+主體段每段首句；
2）首段需要和主體段每段首句內容對應（儘量即可）；
3） 結尾段不做要求。
參考答案：
第一步：找到結論和支持結論的論據。
"A recent study of eighteen rhesus monkeys provides clues as to the effects of birth order on an individual's levels of stimulation. The study showed that in stimulating situations (such as an encounter with an unfamiliar monkey), firstborn infant monkeys produce up to twice as much of the hormone cortisol, which primes the body for increased activity levels, as do their younger siblings. Firstborn humans also produce relatively high levels of cortisol in stimulating situations (such as the return of a parent after an absence). The study also found that during pregnancy, first-time mother monkeys had higher levels of cortisol than did those who had had several offspring."
Instruction 類型：Alternative Explanations
第二步：確定寫作切入點。
第三步：根據 instructions，依照模板，寫首段和主體段第一句。本題較難。第一胎恆河猴和人的例子較 類似，可以放一起寫；母猴單獨寫一段；由樣本量可能太小導致偶然效應寫一段。
In this letter to the editor, the author claims that birth order has direct effects on the stimulation levels of infants and pregnant mothers as manifested in the levels of cortisol. While being firstborn is correlated with high stimulation levels, there are a number of alternative explanations for the higher cortisol level of
first-born monkeys, first child in the family, and mother monkeys in their first pregnancy we need to consider when evaluating the soundness of the argument.First of all, we may explain the high stimulation levels of firstborn infants in terms of their relatively older ages. In both studies of monkeys and human infants, firstborn infants have to be compared with their younger siblings when being exposed to certain stimulating situations. Maybe the firstborn babies responded to the stimulation more actively simply because they were older, and with better cognitive abilities they were more sensitive to potential danger of an unfamiliar monkey or the excitement of a returning parent. The higher level of cortisol could be the result of the intense emotional changes rather than being firstborn. Related to age is the relatively larger body sizes of the firstborn babies which may lead to higher levels of cortisol being released. Assuming the amount of cortisol produced is proportional to the body size, the larger the babies are the more cortisol would be produced given the same level of stimulation. Therefore, we need to control the body size if we want to better understand the effects of birth order on stimulation level.
Although the siblings usually share similar genes, firstborn babies are not genetically identical to their younger brothers or sisters. Therefore, the different levels of stimulation could result from the different genes of the infants. Since the sample size was relatively small, it is possible that infants that are genetically geared towards releasing more cortisol happen to be firstborn. Studies of larger random samples are necessary to tease out the effects of genes from the effects of birth order. Without a thorough investigation of the rival explanation, it is difficult ensure that the argument is tenable.
As for the first-time expecting mothers, birth order may not be the direct cause of high level of stimulation. Maybe the first-time mothers were more excited or nervous about being pregnant, which lead to higher level of cortisol being released. Or the pregnant mothers with children were too busy taking care of their children to feel excited or nervous. If any of these explanations hold true, then birth order may not be the true cause of the level of simulation. Rather, the level of excitement or stress could be a better explanation for the level of stimulation. Therefore, it isessential for us to examine these explanations before we determine the soundness of the argument.
In conclusion, a number of alternative explanations may be advanced for the high level of stimulation observed. Unless we could find concrete information to rule out such explanations, the argument is not very strong.
