1三、翻译下列句子。1. What can you see_on the Earth?2. Hw_wwsin?H_ow⋅isinnow⋅3. What should we do to save the Earth?4. The Earth is very important to us.反馈 收藏
Why are people unable to see light from a black hole? A. Most black holes are too far away. B. Light can not escape a black holes gravity. C. Black holes can travel as fast as light. D. We dont have a powerful enough telescope. 答案 本文是一篇说明文。仰望星空,除了闪亮的星星我们...
When it drops below your angle of vision, you can't see it any more, and that's what we call the horizon. 当地面下沉到你的视角之下时,你就无法再看到,这就是我们所说的地平线。 So how far can you see before the planet curves away? 那么在地球发生弯曲之前,你可以看多远呢? If you're...
Theoretically, in a vacuum there's no limit to how far away your eyes could see since light rays can travel an infinite distance, McCulley says. But on Earth's surface, "you're seeing through the atmosphere, and yellow particular matter in the air is scattering the light," he says. "...
So remember: Scattered in the silent darkness are black holes--the great mystery of space.Why can’t you see light when you look at a black hole() A.Because most black holes are so far away. B.Because the gravity of a black hole is so strong that it sucks the light inward. C.Bec...
How far is it from the Earth to the Moon? Do you know? Well, let me tell you. It 46.more than three days to get there by spaceship. There is no air or water on the Moon. It is very hot in the day and very cold at night there. S So47.can live there.The Moon tums around...
How Earth’s rotation affects eclipse paths Find Day Length for Any Date Day:/ Month:/ Year: Date: How Far Back Does the Data Go? Super-accurate atomic clocks were first developed in the 1950s and 1960s. So measurements of the Earth's rotation using atomic clocks only go back as far...
Answer to: How far is Comet ISON from Earth? By signing up, you'll get thousands of step-by-step solutions to your homework questions. You can also...
Our money doesn’t just sit there in the bank, it’s invested to fund other businesses, some of which are far from environmentally friendly. 我们的钱不仅存在银行里,还投资于其他企业,其中一些企业绝不是环保企业。 So, do you know if your money is funding dirty practices like oil drilling? 那...
B.It falls to Earth.C.It becomes invisible.D.It becomes brighter and easier to see.70.Why can't you see light when you look at a black hole?___A.For most black holes are so far away.B.As the star's gases burn,it stops giving off heat and light.C.As a star cools,its ...