萌新想问一下题目右边668-820是什么意思？

可以理解为类比吧，说明两者之间的不同就可以了， D是加强吧，是吗？

注意看文章最后一句话

我还以为to前面不可以是逗号

date back表示追溯到某个时间段之前 比如这里表 追溯到两百万年前。 date back to表示追溯到特定时间点 比如date back to 2008

hose ability to write gives them disproportionate representation in the historical record

assuming that women's gender, irrespective of other social differences, including literacy, allows us to view women as a homogeneous social group and make that group an object of analysis.

Jacob Burckhardt's view that Renaissance European women "stood on a footing of perfect equality" with Renaissance men has been repeatedly cited by feminist scholars as a prelude to their presentation of rich historical evidence of women's inequality.

does tend at times to conflate "women" and "women writers," assuming that women's gender, irrespective of other social differences, including literacy, allows us to view women as a homogeneous social group and make that group an object of analysis. K是的研究的样本更有代表性

A选项是错在highly critical 这个词上吗? highly critical是不是因为感情色彩太强烈了

This would imply that once maximum tunneling time is reached, tunneling speed will increase without limit as barrier thickness increases. 取非就是答案

because any loose aggregate spinning faster than once every few hours(depending on the asteroid’s bulk density) would fly apart.

是不是应该从这里得到结论 most small asteroids should be monolithic, because impact fragments easily escape their feeble gravity，貌似还是要理解全文，这篇文章第一段是讲现象，第二段讲原因。不过真的原因也不是理解的很好，求讲解。

为了减少犯罪，监狱想取消大学课程。。 但是这个新歌日违反了初衷。因为上大学课程 可能减少犯罪。。

注意：是只有大学课程能减少犯罪。。没有别的原因！！既不是 那些犯人本身犯罪率本身就低， 所以犯罪少。。

时态这个点忽略了

A 选项取非，即拿掉 few：if any of the RDS radio stations that began broadcasting in Verdland after 1994 broadcast to people with RDS-equipped radios living in areas not previously reached by RDS stations. 1994年后新建的RDS station向之前就有RDS设备但没有被覆盖的人播报了。 削弱了原文。因此正确。

However, wood chips occupy less than half the volume of the branches from which they are made.阐明了，做成了木屑后，体积只有树枝的一半。

D选项，假设一：运输费用是由volume决定；假设二：木屑后，volume减少（此为段落最后一句）。
结论：如果就地变成木屑，运输费用会低一些。

段落最后一句补充了D选项的第二个假设，因此能够support D选项的结论。

these cantons often shared other characteristics—similar linguistic backgrounds and strong leftist parties—that may help to explain this phenomenon.

Within the United States prior to 1920, for example, only less urbanized states had granted women suffrage.

老师，高中数学都忘记了，直线k的解析式为什么是y=a(x-1)+1？怎么求来的？