为什么沼气灶燃烧火焰微弱喷嘴前出现火焰及噪音？

阅读理解。

     Nancy's hobby is collecting sharpeners. She spends a lot of time on it after school. She has been 

 collecting more than one hundred sharpeners from different countries. They are all different in color and

  size.    

     Nancy likes sharpeners with animals on them. In this way, she learns the names of many animals. She

 also borrows books on animals from her school library. She learns a lot about them from books.    

     Sometimes Nancy has many sharpeners of the same kind. She gives them to her friends. Then they 

 give her other different sharpeners in return (回报) .   

     Nancy has many pen pals in many countries. She sends them sharpeners of her country. In return, 

 they send her sharpeners of their countries. Nancy's father also gives her sharpeners. He brings them 

 home from different places for her.    

     Many of Nancy' s friends collect other things. Some collect coins and others collect match boxes or 

 stamps. But, all of them say that Nancy's collection is the most interesting of all.

1. Nancy spends a lot of time on her  hobby _____ .

    A. before school

    B. in class

    C. after school

    D. during her holidays

 2. _____ Nancy' s sharpeners are  different in color and size.

    A. All of                

    B. Some of

    C. Many of              

    D. Most of

3. How does Nancy collect sharpeners? Which of the following is NOT true?

    A. Her friends give her some.

    B. Her pen pals send her some.

    C. Her father brings her some.

    D. Her father's friends give her some.

4. Sometimes Nancy has many sharpeners of  the same kind. She then _____ .

    A. keeps them

    B. throws them away

    C. sells them

    D. sends them to her friends

5. What do Nancy's friends collect?

    A. Sharpeners.          

    B. Coins.

    C. Match boxes.        

    D. Both B and C.

针灸治疗疔疮，选取的治疗原则是（）.

A.活血化瘀，消肿散结

B.调理冲任，软坚散结

C.清热解毒，消肿止痛

D.活血化瘀，消肿止痛

E.以上都不是

患者，男性，47岁，主因"发热、腹痛、腹泻2天"以"细菌性痢疾"收入院。患者每日排便15次以上，为黏液脓血便。下列各项肛周皮肤护理措施中，不恰当的是（）

A.用柔软纸擦

B.用温水坐浴

C.用酒精消毒肛周皮肤

D.内衣柔软清洁

E.局部涂以凡士林软膏

治疗缺铁性贫血最重要的是()

A．口服铁剂

B．注射铁剂

C．治疗病因

D．输血

E．进食富含铁的食物

被告人某甲犯故意杀人罪、贪污罪，被A市中级人民法院一审分别判处死刑，决定执行死刑，在上诉期限内，某甲没有上诉，检察院也没有提出抗诉。对此案应当如何报请复核

A．报省高级人民法院核准即可

B．直接报最高人民法院核准

C．由高级人民法院复核同意后再报请最高人民法院核准

D．故意杀人罪报省高级人民法院核准，贪污罪报最高人民法院核准