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（1）在图20中，甲为某磁极附近磁感线的方向和分布的示意图，由图可知，该磁极为 ▲ 极，若在l处放置一个小磁针，当小磁针静止时，其指向应是图乙中的 ▲ .
（2）磁敏电阻阻值的大小随磁场的强弱变化而变，图丁是某磁敏电阻R的阻值随磁感应强度B变化的图象，据图线可知，磁敏电阻的阻值随磁感应强度B的增大而▲ ．图线没有过坐标原点，说明 ▲ .
（3）王强设计了一个可以测量该磁敏电阻R的电路如图丙所示，（其中磁敏电阻所处的磁场未画出）．将该磁敏电阻R放置在磁场中的位置某处，测出电阻后，利用R—B特性曲线可以读出相应的磁感应强度.
①在图甲磁场中1处，测得的数据如图20表中所示，则该磁敏电阻的测量值为 ▲ Ω.
②根据该磁敏电阻的R-B特性曲线可知，1处的磁感应强度为 ▲ T.
③在实验过程中，仅将磁敏电阻从1处移至2处，其它条件不变，那么电流表的示数
▲ （填“增大”、“减小”或“不变”）.
④依据上述方法获得的磁感应强度B的测量值与该点实际值存在不小的误差，为尽可能准确反映空间某点磁场的强弱，你认为在选择磁敏电阻时应注意什么问题？ 查看习题详情和答案>>
Can you take(带去) these things to my brother, Tom? His black hat, clock, Chinese book, photo and ID card. His black hat is on the bed. His clock is on the table. (A) His photo is on the table, too. (B) His Chinese book is in the bookcase. His notebook is in the bookcase, too. And his ID card is in the drawer.
Thank you.
Jenny
根据下列要求完成各题：
小题1:请选出文中没有提到的物品。
| A．bookcase | B．banana | C．ID card | D．Chinese book |
小题3:请将(B)处画线部分的句子合并为一个句子。
小题4:Where is Tom’s photo?
小题5:Where is Tom’s ID card?
She ______ ______ with her friends at the pool.
2. You can't talk loudly in the library. (改为祈使句)
______ ______ loudly in the library.
3. Does she have any color pencils? (改为肯定句)
She ______ ______ color Pencils.
4. I have a new house. It has two bedrooms. (合并为一句)
I have a house ______ two bedrooms.
5. It's very kind of you. (改为感叹句)
______ ______ you are!
阅读理解
先阅读短文，然后根据短文内容从文后每小题的四个选项中，选出一个能完成所给句子或回答所提问题的正确答案。
Never try to work when you are very hungry. If you decide to do your homework right after school, you may want to have something to eat before getting to work. Always do your homework before you get too tired. Don't wait until very late in the evening, or the work will seem much harder than it really is.
Break your time into periods that you can control. If you have more than an hour's work, give yourself a break after an hour. On the other hand don't break it up so much that you can't get anything done. You should be able to work at least half an hour at a time without stopping.
Don't put it off until the last minute. If you put off doing your homework, you will have it on your mind, and you won't enjoy your free time so much. If you put it off until the end of the week or until right before a test, you will have too much catching up to do for you really to learn. A little bit each night, enough to keep up with what is happening each day at school, will take the fear(忧虑) out of tests and keep you on top of it all.
Do your homework at the same time every day. This will help you make it a habit－part of your daily work. It will make it easier to do, and it will make your free time more enjoyable as well.
1．In the first paragraph(段落), the writer tells us to do our homework ________.
[ ]
2．If you need two hours to do your homework, you'd better ________.
[ ]
A．finish it without a stop
B．have a break in the middle
C．rest at least four times
D．break your time as much as possible
3．Which of the following can be the idea of paragraph 3?
[ ]
A．Never too old to learn.
B．He who will not work shall not eat.
C．Where there's a will, there's a way.
D．Never put off till tomorrow what you can do today.
4．In the fourth paragraph the underlined word “habit” means “________”.
5．Which of the following is right according to the passage?
[ ]
A．Eat enough before you do your homework.
B．Always do your homework in the evening.
C．Work no more than 30 minutes at a time.
D．Finish your work before enjoying your free time.
查看习题详情和答案>>阅读短文，然后按要求完成各题。
“Cool”is a word with many meanings．Its old meaning is used to express a temperature that is a little bit cold, as the world has changed,(A)这个词有许多不同的意思。
“Cool”can be used to(B)express feelings of interest in almost anything．
When you see a famous car in the street, maybe you will say,“It's cool．”You may think,“he's so cool,”when you see your favourite footballer．
We all maximize the meaning of“cool”．You can use it(C)________ ________ many words such as“new”or“surprising”．Here's an interesting story we can use to show the way the word is used．A teacher asked her students to write about the waterfall they had visited．On one student's paper was just the one sentence,“It's so cool”．(D)Maybe he thought it was the best way to show what he saw and felt．
But the story also shows a scarcity of words．Without“cool”,(E)some people don't have any words to show the same meaning．So it is(F)quite important to keep some credibility．Can you think of many other words that make your life as colorful as the word“cool”?I can．And I think they are also very cool．
1．将(A)处汉语译成英语：________________________________
2．从文中找出文章的主题句，并写在横线上：_______________
3．根据句意在(C)处填入一个适当的短语：________ ________
4．写出(D)和(F)的同义词或近义词：___________ ___________
5．将(E)句子换成具有相同含义的句子：Some people ________ ________ words to show the same meaning．