下列关于旅游经济结构合理化的说法正确的是( )。 A．体现在旅游经济内部各种结构保

化合反应是中学化学中最基本的反应类型之一．

已知：单质（1）+单质（2）=化合物，请写出满足以下要求的三个化合反应的方程式：

①所涉及的元素都是短周期元素；②6种单质分别属于6个不同的主族．

______；______；______．

阅读理解。

请阅读下面一篇文章,并按照要求匹配信息. 注意:E=AB  F=AC  G=AD

      1  One of the best things you can possibly do is to start your own club. It's great fun especially

if you are the sort of person who feels there's never anything to do during the school holidays.

    The first thing you need to come up with is an idea for your club.  2  Pets, clothes, pop music or

dancing groups, sports, making things? The list is endless.

    Next you need some friends to be in your club with you.   3  All you need is three or four other

people who are interested in the same thing as you.

      4  You should all sit down somewhere together with lots of pieces of paper and write down

every name you can think up. That'll keep you busy for ages.

    At your first meeting you should make up a rule book. And the first rule should be no grown-ups

or little/big brothers or sisters! The best clubs are always secret!

    Now you have just about everything you need, except membership cards. These are very important

and again you can speed a lot of time making them.   5  Why not leave some space for a photo of

yourself? That will make the membership card really look like it.

     So there you are, get clubbing! Once you get started you'll think of loads of more interesting things

to do!

     A. That's easy.

     B. Enjoy your own club!

     C. Invite a designer to join you.

     D. What are you interest in?

     E. Summer vacation is just around the corner.

     F. Then you need to pick a name for your club.

     G. Use a bright thick pen to make a special design.

申办人员短期通行证，无（）的，必须填写陪同人员姓名，陪同人员全程落实陪同责任，并对持证人在控制区内的行为负责。

A、单位介绍信

B、背景调查资料

C、信息资料

D、证明材料

某婴儿，第三胎第三产，足月正常分娩，生后12小时出现皮肤黄染。第一胎正常，第二胎生后2天因重度贫血、黄疸而死亡。本例患儿现疑似为Rh溶血病，为进一步明确诊断，下列哪项检查最有意义（）

A.检查血RBC及Hb

B.观察末梢血RBC形态

C.血清胆红素定量

D.检测肝功能

E.改良的Coombs试验

坚持（）、自然恢复为主，实施山水林田湖生态保护和修复工程。

A、保护优先

B、保持保护

C、优先保护

D、优先治理