A201E精梳机的梳理隔距不是绝对等距的而新型精梳机的梳理隔距是绝对等距的。

按要求写单词。

1. near（反义词）                     3. up（反义词）                5. this（对应词）                   7. beautiful（近义词）                   2. it is（缩写形式）                 4. here（对应词）                      6. go（反义词）                                                             8. where's（完整形式）

某同学需测定某100g过氧化氢溶液中所含过氧化氢的质量．他取10g二氧化锰放入烧杯中，并将该过氧化氢溶液全部加入，不同时间用电子天平测量其质量，所得读数如表所示：

反应时间/min	0	1	2	3	4	5	6
烧杯及所盛物质总质量/g	335.70	334.30	334.00	333.50	333.00	332.50	332.50

（1）试分析，100g过氧化氢溶液完全反应后生成氧气的质量为______．

（2）计算100g过氧化氢溶液中过氧化氢质量分数为多少？（写出计算过程）

（3）请分析该方法测定结果可能会偏大的原因有______（写出一点即可）．

Maybe you are an average(一般的) student. You probably think you will never be a top student. However, anyone can become better if he or she does his or her best. Here are some tips to help you.

★ Plan your time carefully. You should plan your time for things such as eating, sleeping and dressing. Then make a good, regular time for studying. But don’t forget to set enough time for entertainment.

★ Keep your study quiet and clean. The study should have a desk, a chair and some study materials, but no games, no radio and no television! When you sit down to study, you can put your heart into it. Make good use of your time.

★ Listen to everything that the teacher says. Listening carefully in class means less work later. Taking notes will help you remember what the teacher says.

★ After you get home from school, go over your notes. Review the important points. If you know what your teacher is going to discuss next day, read the material. It will help you study better.

★ Develop a good attitude to tests. The purpose of a test is to show what you have learned about a subject. It helps you know what you are not good at. The world will still go on even if you fail in a test, so don’t be too worried.

小题1:How many tips are mentioned in the passage?

A．Three.

B．Four.

C．Five.

D．Six.小题2:What does the underlined word “study” mean in Chinese?

A．学习

B．研究

C．书房

D．教室小题3:Which is a good place for studying?

A．A clean and beautiful place.

B．The place with a computer.

C．The place with a television and a radio.

D．A quiet place with a chair, a desk and some study materials.小题4:Which of the following is NOT true?

A．The purpose of a test is to show what you are good at.

B．After class, you should review what you have learned.

C．You should listen to your teacher and take notes carefully in class.

D．When you plan your time, you should think of the time for eating, sleeping and so on.小题5:What’s the passage mainly about?

A．How to become a better student.

B．How to plan your time.

C．How to study English.

D．How to take notes.

天线电是由（）发明的

凡实施( )或其他需经审批审核的货物应提供有关审批文件。

A．强制性产品认证

B．卫生注册

C．安全质量许可

D．军用商品验证