过境动植物及其产品报检时，应持货运单和输出国家或地区官方出具的检疫证书；运输动物出境

阅读理解。

     The children at the top of the class succeed by knowing a few basic skills that others can easily learn,

according to the education experts and students themselves. Here are the secrets of top students.

     Study is the first thing. Once the books are open or the computer is on, phone calls are unanswered,

TV shows unwatched, snacks unnoticed. Study is business; business comes before everything.

     Study anywhere or everywhere. Study times are different for different children. Some work late at night

when the house is quiet. Others wake early. Still others study as soon as they come home from school.

However, all agree that consistency (持之以恒) is needed.

     Get organized. Don't waste time looking for a pencil or missing paper. Keep everything right where one

can put one's hands on it. Even for a student who doesn't keep his own study area organized, a bag or a

drawer is needed to put things in to save time.

     Learn how to read. The secret of good reading is to be an active reader-one who continually asks

questions that lead to a full understanding of the writer's message.

     Use your time best. Even the best students put off their work sometimes. But when that happens, they

face it. "If you want to be at the top, make sure to finish the work on time." says Christi Anderson, a top

student at Lyman High School.

     Take good notes and use them. Reading the text is important, but the teacher is going to test you on

what he or she emphasized (强调). That's what you find in your notes.

     Another kind of important "secret" of the top students is not so secret at all. For almost all of them,

their parents' help is important.

1. According to the third paragraph, as students, we should all ________.

A. study late into night

B. study in the early morning

C. study in our favorite time with consistency

D. study as soon as we get home

2. The fourth paragraph mainly tells us ________ to save time for study.

A. to look for our stationery

B. to organize ourselves into groups

C. to keep everything in hand

D. to get everything organized

3. How can we be an active reader?

A. Take good notes.

B. Ask questions continually.

C. Study everywhere.

D. Arrange our time well.

4. According to the writer, the real secret in becoming a top student lies in ________.

A. the good teachers.

B. the good education experts.

C. some basic learning skills.

D. the parents' help.

质量是500g的物体，能否用测量范围是0～5N的弹簧秤测量其重力？

焦炉煤气含量最多的是，高炉煤气含量最多的是（）。

班级授课制的基本特点是什么？

雷达显示器荧光屏上的扫描线长度所代表的时间，随（）的不同而不同。

A、物标距离

B、雷达量程

C、物标反射强度

D、雷达显示方式