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问题 选择题

下列叙述正确的是

A．16 8O2和18 8O2互为同位素，性质相似

B．常温下，pH=1的水溶液中Na＋、NO3－、HCO3－、Fe2＋可以大量共存

C．明矾和漂白粉常用于自来水的净化和杀菌消毒，两者的作用原理相同

D．苯酚钠溶液中通入少量CO2：CO2 + H2O + C6H5O- C6H5OH + HCO3-

答案

答案：D

选择题

站在地球的什么位置，四面方向都是北方（　　）

A．赤道

B．南极

C．北极

D．北回归线
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完形填空
阅读下面的一封信，按要求完成各项任务。 （每小题1分，满分5分）
I’ve got some information for everyone going to Britain next month. As you know, you’ll be staying with a family for two weeks. Now the most important thing is money. You should take about ￡30 in cash(现金) and about ￡200 in traveler cheques(支票). Then when you arrive at the airport you’ll be met by our host(主人) family. You must remember to wear a red shirt so the family will find you easily. I’ve told them to look out for the red shirts. You’ll also need to take with you 4 photos of yourself and, of course, it’s very important that you take the school letter. While you are there, if you have any problems, you can call our agent(代理人). I’ll give you her office phone number now: It’s 580-4436 and the person to ask for is Mrs. Belcher, that’s B-E-L-C-H-E-R. She’s in the office from 9-5 every day. OK! That’s everything. Have a good trip.
根据短文内容填写下表，每空词数不限：
GOING TO BRITAIN
Money-cash:            ￡30       
traveler cheques:   (1)                          
Wear: (2)                                      
Take: (3)                                      
Office phone number: (4)                         
Ask for: (5)                                    
 
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