烷基化反应都是在（）条件下进行。A、低温 B、加热 C、无催化剂

阅读理解。

     Mr Smith and Mr. Green work in the same office. One day Mr. Smith said to Mr. Green. "We're

going to have a small party at our house next Wednesday evening. Will you and your wife come?"

     Mr. Green said "Thank you very much. That's very kind of you. We're free that evening, I think.

I'll telephone my wife and ask her. Maybe she wants to go somewhere that evening. "So Mr. Green

went to the other room and telephoned his wife . When he came back, he looked very surprised.

     "What's the matter?" asked Mr. Smith."Did you ask your wife?"

     "No,"answered  Mr. Green ,"She wasn't there. My little son answered the telephone. I said to

him, 'Is your mother there, David?' And he answered, 'No, she isn't in the garden'. 'Where is she then?'

I asked, 'She is in the room.''What is she doing?' I asked again. 'She is looking for me,' my son

answered.

1. Mr Smith asked Mr. Green _________.   

A. to go to the party in their office

B. to have a small party in their office

C. to come to the small party in his house

2. Mr. Green _________. 

A. didn't want to go to the party

B. would like to go to the party with his wife

C. would like to go to the party with his son

3. Mr Green telephoned his wife because _________.

A. he wanted to know where his son was

B. he wanted to know if she was going to his friend's house

C. he wanted to know her to get ready for the party

4. Mr. Green told Mr. Smith _________.

A. there was something wrong with the telephone

B. no one answered the telephone

C. David answered the telephone

5. Mrs. Green _________ in the garden.

A. was working

B. was looking for her husband

C. was looking for her son

五四运动以前，新文化运动的局限是什么？

污区闪络绝缘子的爬距要根据（）来配置。

具有明显刺激、窒息或中枢神经抑制作用，可导致严重急性损害的化学物质，其职业接触限值应采用（）。

A.MAC

B.PC-TWA

C.PC-STEL

D.参考相应的毒理作用分析

塞纳具有甲国国籍，住所在乙国，于1988年死亡。塞纳的亲属要求继承其遗留在丙国的不动产并诉至丙国法院。丙国法院校照本国的冲突规范应适用塞纳的本国法即甲国法；但依甲国冲突规范规定又应适用塞纳的住所地法即乙国法；而乙国冲突规范规定应适用不动产所在地法律即丙国法律。此时，丙国法院适用自己本国法律的行为属于下列哪一选项

A．直接反致

B．间接反致

C．转致

D．双重反致