1. breakage frequencies in the extinct species were strikingly higher than those in the present-day species.
2. more contact between the teeth of predators and the bones of prey due to more thorough consumption of carcasses by the extinct species. Such thorough carcass consumption implies to the researchers either that prey availability was low。
the answer need to refer to the two items in the passage.

There are two reasons: Either... or. Because of or becasue , 第一个because 和第二个的forces 平行， 所以第一个because 后面要跟句子。

文本就没理解。。。。。醉了

When 引导的独立主格结构。

the main sentence is : the increase is accompanied either by....or by... 2B seemed right but the subject is not clear. the subjet in 2B should be gas, but it followed means increase.

A certain clock marks every hour by striking a number of times equal to the hour, 说明6点会敲6下
and the time required for a stroke is exactly equal to the time interval between strokes. 敲击所需要的时间等于敲击的时间间隔6-1=5
所以22秒内总共走了（5+6=11），所以每走一步花2秒。
敲钟和间隔时间一样，6点时敲6下隔5次，共11次，22秒，每下2秒
12点时，敲12下，隔11次，共23次，46秒
摆坏了，6点的时候应该摆六下花22秒，问12点的时候摆12下应该花几秒。

d项 antedate 先于，其他几项都在1500年之后了

选的D 当时想的。。。促销多挣钱 就能还上了。。。

每次分析这么多，都不是重点啊。考试的时候毫不帮助

DE的主要错误在于：如果用critiquing作伴随状语，逻辑主语就变成Davy了吧？

https://forum.chasedream.com/thread-671825-1-1.html 真的没想到啊 d选项不看解释根本不懂 哭了

C：you can't start with 'this advance' unless you're writing a new independent clause (as you would if you were following a coordinating conjunction such as 'and', 'but', etc.) if you're going to use a modifier like this, it should start with 'AN advance' (as does choice A).

公因数不能大于两数

with 1 and 2, we could count cupcake and donghut's price. but how many of donghut 0.4x+0.3y=6? no integer solution.

全家revenue in May is A, Lee in may earned 0.6A, in June is 0.6A*1.2=0.72A, in June， family total is 0.4A+0.72A. 0.71/1.12=64%. If the rest of the family's income was the same both months, understand it carefully,

总量为x，v1是x／5，v2是x／3，当总量为2／3 x时，h=（2／3 x） ／（x／5+x／3）

当x=0是，点分别为（0，0）（0，1／2）（0，5）（0，0）（0，5）

考时态

E 前半句同位语修饰 Incan highway，后半句ing伴随状语

弱弱地问一下....这一题主句的谓语动词是啥....找半天没找到