A．wholeB．everyC．particularD．comprehensive
A. whole
B. every
C. particular
D. comprehensive
查看答案
A．closedB．secretC．privateD．confidential
A. closed
B. secret
C. private
D. confidential
等比数列{an}中的前n项和为Sn，已知S1，2S2，3S3成等差数列，则{an}的公比为()．
A. 2
B. 1/2
C. 3/2
D. 3
E. 1/3
In which of the following ways will one most probably cause trouble？
A. Making faces in telephone conferences.
B. Giving negative replies in email.
C. Talking for a long time face to face.
D. Writing a memo in a formal way.
给付定金的一方不履行约定债务的，无权要求返还定金；收受定金的一方不履行约定债务的，应当返还定金。 ()
A. 正确
B. 错误
微信支付 
支付宝支付