附合缔约
参考答案：
附合缔约，是指合同条款由当事人一方预先拟定，对方只有附合该条款表示出来的意思，方能成立合同的缔约方式。
— ____ is your birthday?
— May fourth. [ ]
A. What
B. When
C. Where
— Have you got any idea for the summer vacation?
— I don't mind where we go _____ there is sunshine, sea and beach.[ ]
A. as if
B. as long as
C. even if
D. in order that
