一个月发一次电子邮件联系,这比较适合于哪类客户()。
A.真正的客户
B.近期内有合作希望的客户
C.近期内没有合作希望的潜在客户
D.关键客户
参考答案:C
等差数列{an}中,a1+a2+a3=40,a4+a5+a6=60,则a10+a11+a12=______.
21. —What did you think of _____ president?
—I didn’t care for him at first, but after ______ time I got to like him.
A.the, a
B./, the
C.the, the
D./, a