在同学们中间,有的同学注重学习的计划性,把每天的时间都安排得十分紧凑,什么时候应该做什么,绝不遗漏,而有的同学却注重过程,他们为了解决某一个问题而不惜每天晚上学到很晚。有时到上另外一节课了,仍然还偷偷去做,受到老师的批评。有的同学认为,学习主要靠老师的指导,跟着老师的思路就行了,所以他们唯老师是从。
甲、乙两个点电荷在真空中的相互作用力是F,如果把它们的电荷量都减小为原来的 12 ,距离增加到原来的2倍,则相互作用力变为( )
将长度为4cm的线段向上平移14cm,所得线段的长度是( )
Look at the ads(广告). You may find something you need.
Xinxing travel agency.
Five-day trip to Zhangjiajie.
By train.
five-star hotel.
Call Miss Li at 5678-9324 for more information.
Guitar lessons.
Music teacher.
Good at teaching kids from 5 to 10 years of age.
Call Mary at 8769-9870.
Babysitter(临时保姆) wanted.
A 2-year-old baby.
At my home.
From 8: 00am to 5: 00 pm.
A lady who is less than 45 years old.
Be kind to kids.
Call Mr. Johnson at 4563-8127.