客户进货的付款条件主要取决于市场供求和商业信用两个因素。()
参考答案:对
—Who is the man ______ by a group of students there?
—A professor _____ research on physics.
A.followed; did
B.following; did
C.followed; doing
D.following; doing
“你今天感觉好点了吧!”属于
A.封闭式提问B.开放式提问C.探索式提问D.倾向性提问E.复合式提问