首页
登录
职称英语
Which of the following statements is TRUE according to the passage? [br] [origi
Which of the following statements is TRUE according to the passage? [br] [origi
游客
2023-11-22
65
管理
问题
Which of the following statements is TRUE according to the passage? [br]
Under proper conditions, sound waves will be reflected from a hillside or other such obstruction. Sound travels at the speed of about one-fifth of a mile per second. If the hill is eleven hundred feet away, it takes two seconds for the sound to travel to the hill and back. Thus by measuring the time between a sound and its reflection-the echo, you can calculate the distance to an obstruction.
During World War II the British made a practical use of this rule to discover planes on their way to bomb London long before the enemy was near the object. They used radio waves instead of sound waves, since radio waves can pass through fog and clouds. The outnumbered Royal Air Force (RAF) always seemed to puzzle Germans that they were lying in wait at the right time and were never surprised. It was radio echoes more than anything else that helped them win the war.
Since the radio waves were used to tell the direction in which to send the RAF planes and the distance to send them, the device was called radio directing and ranging, and from the first letters the word radar was formed.
选项
A、uniformity
B、formality
C、informality
D、individuality
答案
D
解析
本题测试对重要信息的理解和归纳推理能力。根据文中的相关内容,特别是关键信息,如“It is no longer necessary to dress like everyone else”,“you need never feel depressed if you don’t look like the latest fashion photo”,“no one else does either”等,我们可知当今的社会自由度更大,它不再要求我们都穿着一样,即便不像流行的
转载请注明原文地址:https://tihaiku.com/zcyy/3208133.html
相关试题推荐
Thefollowingtwoexcerptsareaboutschooluniform,auniformthatisworn
PASSAGEFOUR[br]WhydidChopinwrite"RevolutionaryEtude"?Toexpresshisgrie
PASSAGEFOUR[br]WhydidChopinlikeplayinginprivatesettings?Heenjoyedthe
PASSAGETWO[br]Whatisthetallestgirl’sroleduringonedance?Thepursuerof
PASSAGEONE[br]WhyisSt.Petersburgcalleda"floatingcity"?Becauseitisne
PASSAGETHREE[br]WhatcanweknowaboutthegracefulfemininestyleinVirgini
PASSAGETWO[br]Whatdoestheword"lineage"inthelastparagraphmean?Strain.
PASSAGEONE[br]Whatisthepassagemainlyabout?Lessonsfromterroristattack
Accordingtoarecentsurvey,74%ofAmericanadultsonlineusesocialnetwork
PASSAGETHEREE[br]Apartfromtheusefulcoincidence,whatfactorsdidthestud
随机试题
Phaticcommunicationrefersto______.A、language’sfunctionoftheexpressionof
MissLiu,IamwritingtoinformyouthatIwishtomoveintoanewroomnextter
TakeNapsatWork.Apologize
Despitethebrouhaha(骚动)overstolene-mailsfromtheUniversityofEastAngl
通过______可清除上网痕迹。A.禁用脚本 B.禁止SSL C.清除Coo
患者,男性,31岁。尿频、尿急、尿痛1年余,有时尿混浊,服用多种抗生素治疗无效。
我国著作权法规定,著作的修改权、署名权以及保护作品的完整性的权利均不受时间限制,
均质圆盘质量为m,半径为R,在铅垂平面内绕O轴转动,图示瞬时角速度为ω,则其对O
“内部审核程序”至少应规定的职责和要求有()。 A.审核的策划B.审
硬聚氯乙烯管使用温度范围是-10~40℃,最高温度不能超过()℃。A.40
最新回复
(
0
)