When two straight lines meet, （） an angle.A.it is formed

When two straight lines meet, （） an angle.A.it is formed
B.they form
C.formed
D.to form答案：B难度：1知识点：词汇与结构部分\大学英语A\结构A\主谓一致A
A.it is formed
B.they form
C.formed
D.to form
正确答案：B
解析:词汇与结构部分\大学英语A\结构A\主谓一致A