甲、乙两辆质量相同的汽车在水平路面上同时向东做匀速直线行驶，s-t图像如图所示，

情景交际。

     根据对话内容，从对话后的选项中选出能填入空白处的最佳选项，选项中有两项多

余选项。

A: Advance Reservations. Can I help you?

B:  1  

A: Yes, we do have a single room available for those dates.

B: What is the rate, please?

A: The current rate is $50 per night.

B:  2  

A: For $50 you will have a radio, a color television, a telephone and a major internatioal newspaper delivered to your room every day.

B: That sounds not bad at all．I'll take it.

A:  3  

B: Yes, it is Charlson.

A: How do you spell it, please?

B: It's C-H-A-R-L-S-O-N.

A: C-H-A-R-L-S-O-N.  4  

B: (010)888-1000. By the way, I'd like a quiet room away from the street if that is possible.

A:  5  .OK.We look forward to your visit．

B: Thank you and good-bye.

A: Good-bye.

     A. What services come with that?

     B. A quiet room away from the street is preferred.

     C. Do you have a single room with a bath for October 5?

     D. What about your telephone number?

     E. Yes, I'd like to book a single room with a bath from the afternoon of October 4 to the morning

         of October 10.

     F. Sorry, I forgot your telephone number.

     G. Very good.Could you tell me your name, sir, please?

根据拼音写汉字。

积（zǎn）_____　　　　妄自（fěi）_____薄

断壁残（yuán）_____　 驰（chěng）_____边疆

十进制数205.5的八进制数表示为_________。

为了实现对海水中的氯化物（以NaCl计）进行成分分析，甲、乙、丙三位同学分别进行实验，他们的实验数据如下表，请分析数据回答下列问题：

	甲	乙	丙
所取海水质量/g	100	50	50
加入AgNO3的质量/g	50	50	75
反应后所得沉淀物质量/g	1.435	1.435	1.435

（1）两种溶液完全反应的是______的实验．

（2）计算该海水样品中氯元素的质量分数（计算结果精确到0.1‰）

（3）若海水的密度以1g/cm³计，那么生产100吨精制食盐，至少需要多少立方米的海水？（精确到小数点以后的第一位）

简述岁时礼俗的伦理性。