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
2023-07-16
13
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://www.tihaiku.com/zcyy/2841282.html
相关试题推荐
[originaltext]Isittruethatyouwillfeelveryexcitedandhappywhenyou
[originaltext]Isittruethatyouwillfeelveryexcitedandhappywhenyou
[originaltext]Isittruethatyouwillfeelveryexcitedandhappywhenyou
[originaltext]W:Hi,Jack!Whatissointeresting?M:Hi,Jane.I’mthinkingab
[originaltext]Thunderstormsaretheleastdangerousandleastviolentofall
[originaltext]Thunderstormsaretheleastdangerousandleastviolentofall
[originaltext]Thunderstormsaretheleastdangerousandleastviolentofall
[originaltext]W:CanIhelpyou?M:Yes,I’dliketoreadsomearticlesthatar
[originaltext]W:CanIhelpyou?M:Yes,I’dliketoreadsomearticlesthatar
[originaltext]Frozenforeverintimearememoriesofwirerimmedglassesan
随机试题
HowExerciseCouldLeadtoaBetterBrainA)Thevalueofmen
饭店品质的教育工作不包括()。A.全面品质管理基本知识的普及教育 B.业务
泡沫-水喷雾联用系统是在水喷雾系统的雨淋报警阀前连接泡沫储罐和泡沫比例混合器,再
制备黑膏药常选用的植物油是A.菜籽油B.大豆油C.花生油D.麻油E.棉籽油
(共用题干)患者男,66岁。肺癌术后1周,食欲不振,每日胸腔引流150~250m
会阴湿热敷的面积,正确的应该是病损面积的A.1倍 B.1.5倍 C.2倍
下列关于工作时间的说法,错误的是( )。A.每月制度工作时间为21.75天
弥漫性血管内凝血形成的血栓是A.透明血栓 B.白色血栓 C.混合性血栓 D
房地产估价是指房地产专业估价人员,以房地产为对象,根据委托人不同的估价目的,遵循
共用题干 一般资料:求助者,女性,54岁,某国企部门经理。案例介绍:求助者与丈
最新回复
(
0
)