英语单选选择Ants are the most common life form on earth, ( ) tiny,their combined weight is greater than that of the combined weight of all humans.A.though B.although C.even though D.as if

英语单选选择Ants are the most common life form on earth, ( ) tiny,their combined weight is greater than that of the combined weight of all humans.A.though B.although C.even though D.as if
英语单选选择
Ants are the most common life form on earth, ( ) tiny,their combined weight is greater than that of the combined weight of all humans.
A.though B.although C.even though D.as if

英语单选选择Ants are the most common life form on earth, ( ) tiny,their combined weight is greater than that of the combined weight of all humans.A.though B.although C.even though D.as if
选A.
可以把句子补全为though (they are) tiny这样来理解,但平时说以及写类似句子的时候一般都是省去括号中的they are的.

A
等于 though (they are ) tiny

C

A 这是一个状语从句的省略 though (they are) tiny，省去主语和be动词，翻译为尽管他们很小，但是团结起来的力量大过整个人类。

选B，这种情况下though和although是可以互换的，但是although会显得更正式些。这题像说明文类的文章，似乎比较正式了。

我认为本题可选ABC三个选项。
因为它们三个意思相同“”尽管，虽然，在此处用法也相同。整句意思为：“蚂蚁是地球上最常见的生命形式，尽管它们微小，但是它们联合起来的力量要比所有人联合起来的力量都要大。”