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【单选题】
旅行社违法安排购物或者另行付费旅游项目的,旅游者有权在旅游行程结束后( )日内,要求旅行社为其办理退货并先行垫付退货货款,或者退还另行付费项目的费用。A.
10
B.
20
C.
30
D.
60
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举一反三
【简答题】Part One Listening comprehension : Section A Directions You will hear 5 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer A, B, C or D. You...
【简答题】Directions: In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which t...
【单选题】Task 1 Directions : In this task there is a passage with five questions or unfinished statements followed by four choices marked A), B), C), and D). You should choose the correct answer and click on i...
A.
they encourage the employees to move forward
B.
they are affected by many factors.
C.
they can not become desirable enough
D.
t hey can not become mature enough
【单选题】Task 1 Directions : In this task there is a passage with five questions or unfinished statements followed by four choices marked A), B), C), and D). You should choose the correct answer and click on i...
A.
a challenging and exciting environment
B.
a frustrating and changing environment
C.
a cooperative and creative environment
D.
a positive and productive environment
【简答题】You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by ma The Amazon-Walmart Showdown That Explains the Modern Economy [A]With Amazon buying the hig...
【单选题】关于获得性膜，下列说法错误的是
A.
是细菌附着牙釉质表面的必需条件
B.
具有选择性吸附能力
C.
由菌斑微生物所分泌
D.
乃菌斑形成初始，在牙面上覆盖的一层均匀无细胞的薄膜
E.
来自唾液糖蛋白结构
【简答题】展览业属于第( )产业中的( )业。
【多选题】下列关于细菌附着的说法,正确的有( )
A.
牙面获得性膜形成后，很快便有细菌附着
B.
最先附着的细菌为球菌
C.
口腔链球菌的附着开始是非特异性、低亲和力、非常迅速的结合反应，继之才是特异性、高亲和力、缓慢的附着
D.
在蔗糖诱导菌斑形成过程中葡糖基转移酶起到关键作用
【单选题】Task 1 Directions : In this task there is a passage with five questions or unfinished statements followed by four choices marked A), B), C), and D). You should choose the correct answer and click on i...
A.
support the individual ’ s career development.
B.
help the employees live more wealthily
C.
develop its own culture
D.
change its culture regularly
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