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
2024-02-19
56
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/3463437.html
相关试题推荐
[originaltext]Somepeoplearguethatthepressureoninternationalsportsme
[originaltext]TheWorldHealthOrganizationhasreleasedareportaboutho
[originaltext]TheWorldHealthOrganizationhasreleasedareportaboutho
[originaltext]W:Dr.Smith.IneedtoaskyouaboutsomethinginChapter12.We
[originaltext]W:Dr.Smith.IneedtoaskyouaboutsomethinginChapter12.We
[originaltext]W:Dr.Smith.IneedtoaskyouaboutsomethinginChapter12.We
[originaltext]M:Hello!W:Hello.ThisisLilyWilson,MayIspeaktoTedRobi
[originaltext]M:Hello!W:Hello.ThisisLilyWilson,MayIspeaktoTedRobi
[originaltext]M:Mymanagersaidwe’regoingtohavesomelay-offssoon.W:Wil
[originaltext]M:Mymanagersaidwe’regoingtohavesomelay-offssoon.W:Wil
随机试题
Thosewholetuncertainty______rarelyachievemuch.A、turnthemdownB、sendthe
[originaltext]Ifyou’regoodatmanagingyourowntimeandenergy,itisveryl
Scatteredaroundtheglobearemorethan100smallregionsofisolatedvolca
【S1】[br]【S9】to→forfundsareraisedto后面应该跟动词,表示集资的目的是为(做)某事;而fundsareraised
住房公积金管理中心是()。A:住房公积金管理的决策机构 B:住房公积金运作管理
急症调剂室药品准备应突出A.速效、高效、安全和全面的特点B.速效、高效、安全和经
《带电设备红外诊断应用规范》要求,对于高压开关设备用螺栓的或与其等效的连结,裸铜
()检验是根据被检样本中的不合格产品数,推断整批产品的接收与否。 A.计件抽
“反对责任擅断和反对有害追溯”,体现的法律归责原则是()A.因果联系原则
下列关于商业银行私人银行业务的说法中,正确的有()。A.私人银行业务是银行提供
最新回复
(
0
)