听力原文：Didn't she call you to say she might be running late?
(A) Yes, she will.
(B) Yes, she is always late.
(C) Not yet.
(20)
A．
B．
C．

听力原文：Who's leading the tour tomorrow?(A) Yes, it's rechargeable.(B) You are.(C) To Yellowstone Park.(21)A． B． C．

A.
(B)
B.
(C)
C.
(21)
A．

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专业技术人员需要掌握的是（）

A.仪表礼仪
B.商务礼仪
C.沟通礼仪
D.社交礼仪

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