尽管在不同的国家和地区,导游服务政治属性是相同的。( )
参考答案:错
解析: 在不同的国家和地区,由于社会制度、意识形态和民族文化的不同导致导游服务政治属性也不同。
在Ⅱ栏中找出I 栏的答句,将序号填入括号内。
I
( )(1) What't the weather like in summer?
( )(2) What are you going to do tomorrow?
( )(3) Who do you want to write to?
( )(4) Can I give him my e-mail address?
( )(5) Which season do you like best?
( )(6) Does it often snow in winter?
( )(7) What do you usually do?
( )(8) Shall we meet at one thirty?
( )(9) Is that Helen?
( )(10) Where does your friend live?
Ⅱ
A. He lives in New York.
B. Sure.
C. Yes, speaking.
D. It's usually very hot.
E. We are going to see a play.
F. David.
G. Yes, you can.
H. I like autumn best.
I. No, it doesn't.
J. I usually go fishing.
下列关于果胶及果胶酶的叙述中,正确的是[ ]
A.果胶酶不溶于乙醇
B.果胶不溶于乙醇
C.加热使果胶变性失活
D.加热使果胶酶活性增强