at speeds（that will be）much higher than （speeds that）are currently possible
Neither compares tasks in dissimilar jobs (that is, jobs across occupational categories) in an effort to determine whether or not what is necessary to perform these tasks can be quantified in terms of its dollar value to the employer.
Bi, can you stop justifying your ignorance?
According to the context , we can hardly assume the very intention of human being is to encounter more prey, nor should we justify the usage of "HAD done" .
In case of any refutation, here is the origin.
The research, which was published in the Feb. 9 issue of the journal Science, has implications both for the modern-day debate over reintroduction programs and for a historical debate over what happened 10,000 to 50,000 years ago, when one particular predator, humans, expanded its territory and encountered large numbers of native prey. Some experts think that a ''blitzkrieg'' of killing by advancing humans contributed to the extinctions of many large animals in that era.
See, It's an article from NY Times. what I wanna say is stop offering your misguidance and misinterpretation!
Yeah, I think you are right. Good for you.
这道题，我觉得毕老师的解释有点问题。首先，一个人很难在一两分钟的时间判断出扩大领土是为了打猎这样的逻辑；其次，when后面使用had done的时态是有问题；最后，扩大领土和打猎为什么不能并列呢，I went to the playground and palyed basketball. 这样没有问题。
哇 你英文真棒 go read NY times then.. did he charge you ? stupid ass free rider
C:the major problem with (d) is the incorrect construction "of + NOUN + VERBing".
also, it's unidiomatic to say that a RATE is "half" (or "more/less than half"). you could say that a rate is 50%, but not "half".
A: the second is evidence that has been cited by others in support of that claim. THAT CLAIM 指的是A前半句中的claim即 money has been wasted. 说反了，不是support是object。
A is employed as B的意思是：A被雇佣为B-积极正面
A is employed to be B的意思是：A被利用为B-消极负面
错选b的我。。。。哎 https://forum.chasedream.com/thread-348240-1-1.html ability to do！ability to do！
B这里是ability has .... 不是在考ability to do噢
A,B，without adequate amounts of sleep 逻辑主语应该是people，如果主句的主语改成people有没有问题？
C, they ... people's skills... 指代不对
E，adequate本来就有amount they need的意思，足够多的
同意。此题AB选项最大的问题不在于“没指出people”，而在于 前半句作为opening mod，它等同于默认是“people's aquired skills”没睡好
rather than by burning calories to generate it
by drawing 与by burning平行
哥，这不是加强，是找assumption! 另外题目翻译也错了！！！是另外一个group, to who was described this scenario.
条件一：把w+y看成是一个负数为a, 把x+y看成是另一个负数为b, a-b=w-y，试想一下，两个负数相减，我们不能并不能判断是大于零还是小于零，也就无法得出w和y的大小了。（我觉得这样理解比较清楚）
哎 把B选项分母的t看成了s, 选了这个