【解析】at the speed of以...速度;across穿过(在物体表面);through穿过(在物体内部空间)。根据time and space可知是物体空间,所以第二空用through,排除A和B,再根据at the speed of以...速度,故选D。 反馈 收藏
解析 B。在这个句子中,spaceship(宇宙飞船)是在太空飞行,“travel”在这里的意思是“fly”(飞行)。A 选项“run”(跑)通常用于在地面上快速移动;C 选项“walk”(走)速度较慢且一般指人在地面行走;D 选项“swim”(游泳)是在水中的动作,都不符合宇宙飞船在太空的移动方式。
2.What’s your favourite type of transportation?ride a bicycletake a bus take a train by planetake a ship walk/ on footby cartransportationbicycle(bike)carmotorbikebustrainairplane(plane)take a train ride a motorbiketake the high-speed railtake a spaceshiptake a subwayA guessing gameHow does...
Yes, relativity also affects the perception of distance for objects traveling at high speeds. As the speed of a spaceship increases, the distance it travels will appear shorter to an observer on Earth. This is known as length contraction, where the length of an object appears shorter when movi...
“The car travels at a speed of 60 miles per hour on the highway.”(汽车在高速公路上以每小时60英里的速度行驶。)这句话中,“travels”描述了汽车在高速公路上的行驶速度,符合第三人称单数形式的用法要求。 “The spaceship travels through space at incredible speeds.”(宇宙飞船...
If we had a spaceship that could travel at the speed of light,we ___reach any planet in no time. A. could B. can C. may D. might 相关知识点: 试题来源: 解析 A。如果我们有一艘能以光速行驶的宇宙飞船,这是与现在事实相反的假设,要用“could+动词原形”表示能够做某事。反馈...
In the sci-fi world, a spaceship can travel at a very high speed. A light-year is a unit of distance that represents the distance light travels in one year. If a spaceship can travel 10 light-years in an hour, which of the following is not possible? A. It can travel 5 light-year...
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Is the speed of light constant? The speed of light is a universal constant in a vacuum, like the vacuum of space. However, light *can* slow down slightly when it passes through an absorbing medium, like water (225,000 kilometers per second = 140,000 miles per second) or glass (200,...
It is predicted that a moving observer experiences slower time than a stationary or non-moving observer. The time-dilation effect is stated as t=to1−v2c2 Where: to is the time of the stationary observer, v is the speed of the moving observer, and ...