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Light travels at about____.

来源：学生作业帮 编辑：作业帮 分类：综合作业 时间：2024/05/14 04:51:39
Light travels at about____.
A.300 000 kilometres a second B.300 000 kilometres every second 选哪项?为什么?每小时5英里怎么表示?
A. 可以说是固定搭配吧,表达这样的数量时,“每”都是用a/an翻译的.
每小时5英里就是 5 miles an hour
a 或 an 一般也可以用 per 代替(几乎是可以互换的).例
300 000 kilometres per second
5 miles per hour
再给一些其它的例子：
10 times a week (每星期10次)
7 dollars a pound (每磅7美元)
3 pictures per page (每页3张图片)
40 students per class (每班40个学生)
Light travels at about____. light travels是什么意思? light travels at a speed which is about a million times fast 判断正误Light travels at a speed which is about a million times 英语翻译Light travels at a speed which is about a million times the()thing in the universe is light,it travels at 300000 km 选词填空 light travels at a spend which is about a It ( )that light travels faster than sound Light travels move quickly than sound? Light travels faster than sound改为过去式 Light travels much faster than sound. light travels 是什么意思?光年的英语单词是什么?