0的相反数是______.

阅读理解。

Saleswoman: Can I help you? 

Jim: Oh, yes. How much is this T-shirt?

Saleswoman: It's only $ 29.50. 

Jim: Really? Is it on sale?

Saleswoman: Yes. It's usually $45.00. But only at the weekends, everything is at a very good price. 

Jim: OK. I'll take two T-shirts for my twin sons.

Saleswoman: What colour do they like? 

Jim: Blue.

Saleswoman: Oh, I'm so sorry. We haven't any blue ones left. How about the green ones? 

Jim: All right. Here's the money.

Saleswoman: Thanks. Here's your change (零钱).

1. Two sweaters are ______ on Monday. 

A. $28.00  

B. $45.00  

C. $90.00  

D. $56.00

2. The meaning of the phrase "on sale" is ______.   

A. 减价销售  

B. 正常营业  

C. 非卖品  

D. 高价回收

3. They are talking ______.

A. in a shop  

B. at home  

C. in a school  

D. in a hospital

4. At last (最后) Jim buys two ______ for his sons.  

A. blue sweaters                          

B. green T-shirts  

C. white jeans                          

D. yellow skirts

5. If Mary buys three ______ on Saturday here, they will cost (使……花费) her $60.00.

A. sweaters     

B. T-shirts      

C. skirts    

D. jeans

某患者在静脉注射丝裂霉素过程中，注射局部出现疼痛、肿胀。护士查看后确认为药液漏出血管，应采取的措施是（）

A.拔出针头，局部封闭

B.拔出针头，局部热敷

C.给予镇痛药

D.外用镇痛药膏

E.减慢输液速度

This is not _________ watch. I think it’s _____________ watch.    [ ]

A. you, he

B. she, my    

C. his, her

D. me, his

治疗成人急性喉炎的常用方法有（）。

A.禁大声讲话，多用耳语说话，使声带休息

B.超声雾化吸入庆大霉素和地塞米松

C.有细菌感染时可全身应用抗生素和糖皮质激素

D.中药对急性喉炎有一定的疗效

E.行急症气管切开术

C₆H₆是（）化合物。

A.烷烃

B.烯烃

C.炔烃

D.芳香烃