问题 单项选择题

结核菌素试验时,72h后局部肿大、直径为11~19mm可判定为

A.无反应
B.弱阳性反应
C.强阳性反应
D.阴性反应
E.中度阳性反应

答案

参考答案:E

解析:结核菌素试验经48~72h测量皮肤硬结直径,11~19mm为中度阳性反应,表示受试者曾经受到过结核菌感染或已经接种过卡介苗,但不能判定其是否患有结核病。

阅读理解

阅读理解。

     It's Saturday afternoon. Tanya is going to the laundromat(自助洗衣店)on Lincoln Street. She

needs to wash her clothes.

     There are many people inside the laundromat. Everyone is washing clothes. Tanya has two loads

of laundry. One load is for colours, and the other is for whites, but Tanya sees only one empty washing

machine.

Tanya thinks, "I don't want to wait for another machine. My loads are small. I will put them together

in one machine."

     The washing machine stops after thirty minutes. Tanya opens it and takes out her clothes. Oh, no!

Her white sweater isn't white anymore. It's pink! Washing the whites and colours together is not a

good idea. Now she needs to buy a new white sweater.

根据短文内容,简要回答下列问题。

1. What day is it?

                                                                

2. Is the laundromat on Washington Street?

_                                                              

3. How many loads of laundry does Tanya have?

_                                                              

4. Does Tanya want to wait for another machine?

_                                                              

5. What colour is Tanya's sweater now?

_                                                              

单项选择题