A team _______20 members.

[例如] One year consists of 365 days．
一年有365天.
The team consists of 10 members．
这个小组由10个成员组成.
[辨析] consist of; make up; be made up of
consist of常用整体作主语,表示“整体由部分组成”,引申为“包含有”,不能用于被动语态.make up用部分作主语,表示“部分构成整体”,用于主动语态；如果用整体作主语,必须用被动结构be made up of,这时可以和consist of互换.另外,make up还可以表示“化装；编造”.
A是对的呀!

答案错了

因为consists of 是用来说物质的组成
而made up of是说人群的所属关系的。。
我们初二最近也学到了这个。。绝对是正确的。。。
如果还不懂的话。。我给你个例句
the book shelf consists of wood. 书架（是个东西）有木头组成
the class made up of 15 students. 班级（集体）由...

你打漏了吧
B应该是 is made up of 由。。。构成的
A是前面的构成后面的，像这句话，是 20 members consist of a team.

consists of 由。。。构成
相当于 be made up of
A team is made up with 20 members