阅读理解：阅读短文，选择正确答案完成句子或回答所给问题。

　　As I was leaving to meet Lynne, my roommate told me that I'd better take some money, but I didn't listen to him. I thought that Lynne would pay because she had invited me.

　　I arrived at the restaurant exactly on time. I'd been told that Americans expect you to be on time. Lynne and I sat at a table in the comer of the restaurant and a waitress came and took our order.

　　The dinner was a great success. I talked a lot about Saudi Arabia and Lynne told me all about herself. After two hours the waitress finally came and asked if we wanted one check (帐单) or two. Lynne said two. We went to the cashier(出纳) and Lynne paid her check. I was embarrassed(尴尬)when the cashier gave me my bill. I had no money to pay for my meal. Then I had an idea. I pretended(假装) to look for something in my pockets and said,“Oh! I forgot my money! Can I call my roommate, please?”The cashier showed me where the phone was and I quickly called my roommate.

　　In a few minutes he arrived with some money, but he couldn't hide how he felt. He laughed all the way home.

　　Now, I think it's funny too, but at the time I was terribly embarrassed. I thought that an invitation to have dinner meant the same thing in the United States as in my country. I guess you have to understand that your customs are only your customs. When you visit a foreign country, you have to learn about their customs(风俗), too.

1．The writer's roommate told the writer to take some money with him ________.

[　　]

A．to pay for the meal

B．to share(分担)the cost of the meal

C．to invite Lynne to dinner

D．to pay the checks

2．The roommate laughed all the way home because ________.

[　　]

A．the writer was embarrassed when he couldn't pay his check

B．the writer telephoned him to bring some money to him

C．the writer hadn't told Lynne the truth

D．the writer would not listen to him when he left the house

3．Customs can be ________ in different countries according to this passage.

[　　]

A．almost the same

B．quite different

C．close to each other

D．very similar

4．Why didn't Lynne pay the check for the writer?

[　　]

A．Because she didn't have enough money with her.

B．Because she didn't want to do so.

C．Because she thought it was natural for people to pay their own check.

D．Because she wanted to embarrass the writer.