71.why does sound travel faster in summer than in winter 352023-07 3 70.why does saturn have rings 482023-07 4 69.why does popcorn pop 452023-07 5 68.why does our recorded voice sound different 442023-07 6 67.why does ice float 342023-07 7 66.why does hot air balloon float 452023...
Can you believe the magazine sells seven thousands copies a month. A lawyer has been hired to handle the case. Do you know how much the house is worth. Don't hesitate anymore. The best time to invest is now. Employers are encouraged to B sales in the form. A travel accent is a per...
Q2 Sound can travel through oil, iron and water but not through vacuum. View Solution Q3 Why can't the sound travel through vacuum ? View Solution Q4 what is vacuum ? explain why sound cannot travel through vaccum? View Solution Q5 Sound can travel easily through vacuum View Solution ...
(travel) faster than sound. 相关知识点: 试题来源: 解析 1.travels 考查动词时态。根据句子结构,该宾语从句是叙述永恒不变的 "真理" ,时态应为一般现在时, "light" 是主语,所以谓语动词应为三单形式 "travels" 。句意:过去的人们不知道为什么光比声音传播得快。故正确答案为:travels。
There's a reason why women don't read this stuff; it's not funny... 女人不读这种东西是有原因的,它并不好笑。 柯林斯高阶英语词典 Unless you're ill, there's no reason why you can't get those 15 minutes of walking in daily. 除非你病了,否则你没有理由每天连走15分钟都做不到的。 柯...
Don't let the silence fool you; there is absolutely nothing calm or serene about space travel. Space is the harshest environment known to man, and even ...
Humans can only hear sound waves between 20 and 20,000 Hz, but sound waves can still affect us below that threshold. If you sit in front of a subwoofer with the frequency at 19 Hz, even with the volume turned up to 100 dB, you won't hear anything — but you'll feel the vibration...
—Why don't you go to the English Corner and try to talk to others You will benefit a lot from it. 免费查看参考答案及解析 题目: 听下面一段较长对话,回答以下小题。【1】Why does the woman decide to register for 3 days instead of 2A.She can get free dinners.B.She can’t save ...
Examines why compressional sound waves travel faster along the earth's axis in the inner core. Analysis of the origin of the seismic anisotropy observed in the inner core; Collaboration among several scientists to come up with a method of calculating the elasticity of iron in the inner core; ...
M: I'm not sure if I can take the time off work. My company is really busy right now, and you know we need the money. W: You always say that! We haven't been on a trip in years. Don't you want to go on vacation?