首页
登录
职称英语
[originaltext] Bows and arrows are one of man’s oldest weapons. They gave ea
[originaltext] Bows and arrows are one of man’s oldest weapons. They gave ea
游客
2024-02-17
29
管理
问题
Bows and arrows are one of 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. This bow had limited power and short range. However, man overcame these faults by learning to track his targets at a close range. The long bow was most likely discovered when someone found out that a five-foot piece of 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 a force of about one hundred pounds was needed to pull the string all the way back on a long bow. For a long time the bow was just a bent stick and string. In fact, more changes have taken place in a bow in the past 25 years than in the last 7 centuries. Today, 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 bows itself ranks with discovery of fire and the wheel. It was a great step forward for man.
选项
A、Because it did not shoot far.
B、Because it did not bend easily.
C、Because it was too heavy.
D、Because its string was short.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3457548.html
相关试题推荐
[originaltext]Manyofusoftencomplainthatwecannotrememberthingsore
[originaltext]Manyofusoftencomplainthatwecannotrememberthingsore
[originaltext]Duringthe19thcentury,women’seducationwasnotconsidered
[originaltext]W:Youdon’tlooktoowell.Maybeyoushouldtakethedayofffro
[originaltext]M:Excuseme!I’dliketoseeMr.Jonesthisafternoon,please.
[originaltext]M:Excuseme!I’dliketoseeMr.Jonesthisafternoon,please.
[originaltext]M:Excuseme!I’dliketoseeMr.Jonesthisafternoon,please.
[originaltext]M:Excuseme!I’dliketoseeMr.Jonesthisafternoon,please.
[originaltext]M:Excuseme!I’dliketoseeMr.Jonesthisafternoon,please.
[originaltext]OnJune17,1744,theofficialsfromMarylandandVirginiahel
随机试题
Tomanyweb-buildingspiders,mostof【C1】______arenearlyblind,thewebi
A、Becausetherearemuchmorefunnyentertainmentplaces.B、Becauseithasthem
Therearethreekindsofgoals:short-term,medium-rangeandlong-termgoals
要在局域网中构建多媒体会议系统,应使用()协议。A.无正确答案 B.H.320
以下关于游客住房方面的个别要求中,导游人员可予满足的是( )。A.要求购买房中
一个有远大理想和坚强意志的人,任何困难和心理压力都难以被压服,这说明此人具有良好
产妇,29岁,第一胎,妊娠合并心脏病,孕37周,阴道侧切分娩一活婴,产后心功能Ⅱ
共用题干 GK公司是经营空调的大型企业,与上下游企业间的纵向联系及各类专业服务
关于用人单位与劳动者建立劳动关系时间的说法,正确的是()。A.用人单位与劳
某生产车间进行吊装作业,为防止吊装物料大量滑落,班长要求工人站在吊装的物料上,根
最新回复
(
0
)