Some feminist social scientists, by contrast, have argued that the basic division in American society is instead based on gender, and that the total female population, regardless of economic status, constitutes a distinct class.
a virus introduced to control rabbits reduced the amount of open ground (because large rabbit populations reduce the ground cover), in turn reducing underground ant nests and triggering the extinction of a blue butterfly that had depended on the nests to shelter its offspring. open groud裸露地，不毛之地；ground cover地面植被
原有生物链：兔子多--》植被少--〉裸露地多--》地下蚁穴多--〉蓝蝶产卵的地方多--》蓝蝶多
病毒引入后：兔子少--〉植被多--》裸露地少--〉地下蚁穴少--》蓝蝶没地儿产卵--〉蓝蝶灭绝
伴随状语和时间状语都是修饰recevie,所以所有选项都没有错误，问题在于时态四个都不对。原句的逻辑是在两个情况下，会不充分治疗。而 patients being taken of; patients were taken of ; patients have a prescription 都发生在have received inadequate treatment之后，而逻辑上应该发生在不充分治疗之前，或同时
個人認為重點在這句。The only place where the wild form of emmer wheat has been found growing is a relatively narrow strip of southwest Asia.
在農業開始發展以前，這個地方是唯一可以發現在野外發現這種小麥的地點，其他地方都不會有野生小麥出現。
要開始種植這種作物一定要有種子，所以人工種植的小麥一定要先從A點的野外移植到A的農村，然後才隨著人們的遷徙，從A擴散到其他地方。
古代人類沒有旅遊的習慣，所以不太可能發生一個人從A的野外拔了這種小麥，然後帶到其他地方去種植。
比较的题型：1）比两样东西（名词），2）比两个动作（动词）。
这里比较的是两个动作，所以，有一个省略用法 [sub+verb]+modifier，只保留modifier，选C。
如果是比较两个东西, 比如circulation in.... is lower than that in ....，就应该是D。
（newspaper）{had} 《lower circulation》 in the six months than（newspaper）{ had} in a similar period
改写为两个东西比较：the circulation of newspaper in the six months is lower than that in a similar period
In arguing that this decline of feudalism was economically determined, the Marxist asserted that the Black Death was a relatively insignificant factor. 其实还是文章理解不到位；
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Some feminist social scientists, by contrast, have argued that the basic division in American society is instead based on gender, and that the total female population, regardless of economic status, constitutes a distinct class.