首页
登录
职称英语
[originaltext] Bows and arrows are one of the man’s oldest weapons. They gav
[originaltext] Bows and arrows are one of the man’s oldest weapons. They gav
游客
2024-02-17
51
管理
问题
Bows and arrows are one of the man’s oldest weapons. They gave early man an effective weapon to kill his enemies. The ordinary bow or short bow was used by nearly all early people. These bows had limited power or short range. However, man overcame these faults by learning to track his target at close range. The long bow was most likely discovered when someone found out that a five-foot piece wood made a better bow than a three-foot piece. Hundreds of thousands of these bows were made and used for three hundred years. However, not one is known to survive today. We believe that force of one hundred pounds was needed to pull the string all the way back on the long bow. For a long time, the bow was just a bent stick and a string. In fact, more changes have taken place in the bow in the past 25 years than in the last 7 centuries. Today’s bow is forceful. It is as exact as a gun. In addition, it requires little strength to draw the string. Modem bows also have precise aiming devices. In indoor contests, perfect scores from 40 yards are common. The invention of the bow itself ranks with the discovery of fire and the wheel. It was a great step forward for man.
选项
A、It went out of use 300 years ago.
B、It was invented after the short bow.
C、It was discovered before fire and the wheel.
D、It’s still in use today.
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3458827.html
相关试题推荐
[originaltext]M:Cindy,whatishappinessinyourmind?W:Whyask?It’sadiff
[originaltext]M:Cindy,whatishappinessinyourmind?W:Whyask?It’sadiff
[originaltext]M:IhopeIdon’toversleep;I’vegottocatchthe6:30trainto
[originaltext]M:IhopeIdon’toversleep;I’vegottocatchthe6:30trainto
[originaltext]MyfirstsemesterofcollegewastheworstI’vebeenthrough.
[originaltext]MyfirstsemesterofcollegewastheworstI’vebeenthrough.
[originaltext]MyfirstsemesterofcollegewastheworstI’vebeenthrough.
[originaltext]MyfirstsemesterofcollegewastheworstI’vebeenthrough.
[originaltext]Crimehasitsowncycles,amagazinereportedsomeyearsago.
[originaltext]Crimehasitsowncycles,amagazinereportedsomeyearsago.
随机试题
Labelthemapbelow.WritethecorrectletterA-H,nexttoQuestions11-15.[img
[originaltext]Wouldyouliketogoswimmingwithme?[/originaltext]A、No,yougo
设A、B、C为同阶矩阵,且C为非奇异矩阵,满足,求证:
灭火剂代号为S的灭火器,表示()。A.水基型灭火器 B.干粉灭火器 C.二
一般认为用于过筛实验的分析方法希望有:()A.高敏感性 B.高特异性
“精血同源”是指:A.脾胃同源 B.肝肾同源 C.心肝同源 D.心肾同源
A.前降支 B.对角支 C.右冠状动脉 D.回旋支 E.左冠状动脉主干容
我国人民法院设行政审判庭,依法实行(),对具体行政行为是否合法进行审查。A.合
情景分析是风险度量的方法之一,()可以作为情景分析中的情景。A.人为设定的
下列关于现金成本说法错误的是()。A.机会成本随现金持有量增加而增加 B.管
最新回复
(
0
)