According to the article, light travels very fast. What can we assume about a place where there is no light? A. It is very cold. B. It is very noisy. C. It is completely dark. D. It is very small. 相关知识点: 试题来源: 解析 C。解析:没有光的地方一定是完全黑暗的。A 选项冷...
解析 A。本题考查主语从句。“It is known to all that”是固定句型,其中“that light travels faster than sound”是主语从句,that 在主语从句中不做成分,只起连接作用,if 不能引导主语从句,what 在主语从句中充当主语、宾语等成分,when 在主语从句中作时间状语,此处用 that 引导主语从句。
试题来源: 解析 A。解析:本题考查主语从句的引导词。it 作形式主语,真正的主语是后面的从句,从句中不缺少任何成分,所以用 that 引导。what 在主语从句中充当主语、宾语或表语;which 在主语从句中有选择的意思;when 在主语从句中作时间状语。反馈 收藏
其他的,如果是A项,应该是: It is well-known that light travels faster than sound.(it 作形式主语) 如果是C项,则是: As is well-known,light travels faster than sound.(as 作关系代词) 分析总结。 要表达人人皆知的是光的速度比声音的快结果...
Light travels very fast. What is the speed of light? A. 300,000 kilometers per second. B. 30 kilometers per hour. C. 3,000 meters per minute. 相关知识点: 试题来源: 解析 A。光的速度是每秒 30 万公里。其他选项速度不对。反馈 收藏 ...
百度试题 结果1 题目___ we know,light travels faster than sound.What That How As相关知识点: 试题来源: 解析 (D) 反馈 收藏
Light travels in straight lines. What happens when light passes through a prism? A. It disappears. B. It changes direction. C. It becomes darker. D. It becomes louder. 相关知识点: 试题来源: 解析 B。解析:当光通过棱镜时,它会改变方向。选项 A 消失不对;选项 C 变暗不对;选项 D 变响不...
百度试题 结果1 题目( ) Our physics teacher told us I light travels faster than sound. A. what B. whether C. when D. that 相关知识点: 试题来源: 解析 D 反馈 收藏
【题目】Itisknown___lighttravelsfasterthansound. A.asB.thatC.whatD.which 试题答案 在线课程 【答案】B 【解析】此句中It是形式主语,真正的主语是后面的that从句,从句中不缺成分,故用了that。Itisknownthat…表示"众所周知……"。 练习册系列答案
Take a look at the refracted light. Notice that it bends away from the normal. The angle of refraction it makes is larger than the angle of incidence. Now look at the second beam--the light reflected back into the glass. The angle it makes is exactly the same as the angle of incidenc...