The nurse provides fluid replacement for a

阅读理解 .

       Hello, everyone, Here is something important for everyone going to London next month. As you

know, you are going to stay with a family for two weeks. Now, the most important thing is money. You

should take about 530 dollars with you. I think it will be enough for everyone. Then, when you arrive,

your new family will meet you. You must remember to wear a red shirt, so the family will find you easily.

They've been told you all wear red shirts. You'll also need to take with you 4 photos of yourself and, it's

also very important that you take the school letter. While you're there, if you have any problems, you can

call Leech School Office. I'll give you the office phone number: it's 580-4436 and the per-son to ask for

is Mrs Becher she is in the office from nine o'clock in the morning until five in the afternoon every day.

OK. That's everything. Have a good journey!

根据短文内容，回答下列问题。

1. Where are they going?

2. How long are they going to stay there?

3. Why must they wear red shirts?

4. What could Mrs Becher's job be according to the passage?

可摘局部义齿RPI卡环采用近中支托的主要目的是（）

A.防止基托下沉

B.减少基牙所受扭力

C.增强义齿稳定

D.防止食物嵌塞

E.减少牙槽嵴受力

唐风

窄孔经天线具有较好的工作性能，它可以减小测向天线附近物体的影响。