问题
选择题
如图所示，下列电路中属于串联电路的是[ ]
A.
B.
C.
D.
答案
答案：B
搜题请搜索小程序“爱下问搜题”
如图所示，下列电路中属于串联电路的是[ ]
A.
B.
C.
D.
答案：B
| 完形填空。 | |||
| E-schoolbags (电子书包) Is your schoolbag too heavy? The e-schoolbag will help you. It is said that e-schoolbags are going to be brought into 1 in Chinese middle schools soon. Heavy schoolbags have been a serious 2 for a long time. But the e-schoolbag will 3 . An e-school-bag is 4 lighter than a usual schoolbag. Perhaps, the e-schoolbag should be 5 an e-textbook. It is a small computer for students. It is as 6 as a usual book, 7 it can still have all the things for study, such as textbooks, exercise books and so on. They can be made 8 chips (芯片) like stamps. The students can read the text page by page on the screen (屏幕), take notes (记笔记), or even send e-mails to their. teachers. They only need to 9 the right chip into the e-schoolbag. Then they can use it. Some people say 10 e-textbooks can be easily broken, while others say it is not good to students' eyes. But only time will tell. | |||
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