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
76
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
AnofficetoweronMillerStreetinManchesteriscompletelycoveredinsolar
I’dratherhavearoomofmyown,howeversmallitis,thansharearoomwithsome
[originaltext]Theproverb"oneman’smeatisanother’spoison"appliestot
A.步行失用 B.运动性失用 C.意念性失用 D.结构性失用 E.意念运
对证券公司从事证券投资顾问业务实行监督管理的是()。 Ⅰ.中国证监会 Ⅱ.
A.氨力农 B.地高辛 C.哌唑嗪 D.氯沙坦 E.美西律血管紧张素Ⅱ受
患者痰液黏稠不易咳出,护士对其护理措施正确的是A.用高渗盐水湿化呼吸道 B.紧
35kV及以下中性点电容隔直/电阻限流装置精红外测温周期为半年。
李某以前在银行工作,现在上海期货交易所工作,张某、赵某、王某、罗某想要投资上海期
海港工程的极端低水位应采用重现期为()的年极值低水位。A.100年 B.50
最新回复
(
0
)