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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>>
One day Einstein (爱因斯坦) was walking in the street in New York (纽约). His friend met him and said to him: “Einstein, you should (应该) buy a new coat. Look, How old your coat is!”
But Einstein answered: “It doesn't matter. Nobody knows me here.”After a few years Einstein became (成为)a famons scientist (著名的科学家). But he still wear the old coat. His friend met him again and asked him to buy a new one. But Einstein said: “I needn't (不必) buy a new one. Everyone knows me here.”
根据短文内容选择正确答案。
(1)Einstein is ________ scientist.
[ ]
(2)Einstein's coat is very old. His friend ________.
[ ]
(3) Einstein doesn't want to buy a new one because ________
[ ].
(4)a few years later Einstein ________.
[ ]
(5) The title of this passage should be (短文的题目应是)________.
[ ]
下面是校刊准备刊登的五篇材料，请根据这五篇材料
(1－5)中的内容，为它们找到校刊中相应的栏目，并把栏目编号(A，B，C…)填人相对应的题号中。校刊栏目
A．News B．People C．Environment D．Show Ourselves E．Food F．Lost and FoundOne day Einstein (爱因斯坦) was walking in the street in New York (纽约). His friend met him and said to him: “Einstein, you should (应该) buy a new coat. Look, How old your coat is!”
But Einstein answered: “It doesn't matter. Nobody knows me here.”After a few years Einstein became (成为)a famons scientist (著名的科学家). But he still wear the old coat. His friend met him again and asked him to buy a new one. But Einstein said: “I needn't (不必) buy a new one. Everyone knows me here.”
根据短文内容选择正确答案。
(1)Einstein is ________ scientist.
[ ]
(2)Einstein's coat is very old. His friend ________.
[ ]
(3) Einstein doesn't want to buy a new one because ________
[ ].
(4)a few years later Einstein ________.
[ ]
(5) The title of this passage should be (短文的题目应是)________.
[ ]
