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【简答题】
阅读理解。
Howcouldwetelltimeiftherewerenowatchesorclocksanywhereintheworld?Thesunwas
probablytheworld'sfirst'clock',exceptinthefarnorth,wheretheEskimos(爱斯基摩人)live.
There,it'sdarkmostofthewinter,andlightmostofthesummer.Butinmostoftheworld,people
haveusedthesunforaclock.oday,ifyoudon'thaveaclock,youstillknowthatwhenthesun
shines,it'sday,andwhenit'sdark,it'snight.Thesuncsotellyouifit'smorning,noon,or
afternoon.
Peoplewholiveneartheseacantelltimefromthetides.Inthedaytime,foraboutsixhours,the
waterriseshigherandhigheronthebeach.Andthenitgoesdownanddownforaboutsixhours.The
samethinghappensagainatnight.Therearetwohightidesandtwolowtidesevery24hours.
Seamenonashiplearnhowtotelltimebylookingatthemoonandthestars.Thewholeskyistheir
clock.
Insomeplacesintheworldthewindcomesupataboutthesametimeeverydayorchanges
directionorstops blowing.Intheseplacesthewindcanbetheclock.
Asandclockisanevenbetterclock.Ifyouhadfine drysandinaglassshapedliketheoneinthe
picture,you wouldhavewhatiscalledanhourglass.Thesandinthe hourglassgoesfromthetoppart
tothebottompartinexactlyonehour.Whenthehourglassisturnedover,thesandwilltakeanother
hourtogobackagain.
1. Accordingtothepassage,thereare______ waystotelltimebesidestheclockandwatch.
A.3
B.4
C.5
D.7
2. TheEskimosinthefarnorthcan'tusethesunforaclockbecause______.
A.theyknowverylittleaboutthesun
B.thesuntherenevergoesdowninwinter
C.it'stoocoldforthemtogoouttowatchthesun
D.ithaslongdarkwintersandlonglightsummers
3. Theunderlinedword'tides'inthepassagemeans______.
A.洋流
B.潮汐
C.海啸
D.波浪
4. Inwhichpageofanewspapercanyoumostprobablyreadthispassage?
A.News.
B.Science.
C.Business.
D.Advertisement.
5. What'sthebesttitleforthepassage?
A.DifferentWaystoTellTime
B.UsefulMachinestoTellTime
C.TheHistoryoftheClock
D.TheDevelopmentoftheClock
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【单选题】海上波浪周期为8秒，有关船舶在相应横摇周期下的摇摆情况的叙述，下列哪项正确?()
A.
船舶横摇周期为6秒时，横摇较慢
B.
船舶横摇周期为10秒时，横摇较快
C.
船舶横摇周期为8秒时，横摇最剧烈
D.
A、B、C都正确
【单选题】关于波浪作用力的计算以下说法正确的是
A.
海洋结构物的波浪力都可以应用莫里森方程计算
B.
莫里森方程考虑了粘滞效应和附加质量效应
C.
多桩柱存在时计算波浪力不需要考虑彼此的影响
D.
前后两桩柱的最大合波力计算只需要计算单桩柱的最大波力乘以2即可
【单选题】所有爱斯基摩人都是穿黑衣服的，所有北婆罗洲人都是穿白衣服的，没有穿白衣服又穿黑衣服的人，H是穿白衣服的人，基于以上事实，下面()项判断必为真。
A.
H是爱斯基摩人
B.
H是北婆罗洲人
C.
H既不是爱斯基摩人又不是北婆罗洲人
D.
H不是北婆罗洲人
E.
H不是爱斯基摩人
【单选题】Ancient Egypt Brought Down by Famine Even ancient Egypt’s mighty pyramid (金字塔) builders were powerless in the face of the famine (饥荒) that helped bring down their civilization around 2180 BC. Now evid...
A.
The White Nile is the trunk of the River Nile.
B.
The White Nile is the trunk of the Blue Nile.
C.
The White Nile is a branch of the Blue Nile.
D.
The White Nile is a branch of the River Nile.
相关题目：
【单选题】海上波浪周期为8秒，有关船舶在相应横摇周期下的摇摆情况的叙述，下列哪项正确?()
A.
船舶横摇周期为6秒时，横摇较慢
B.
船舶横摇周期为10秒时，横摇较快
C.
船舶横摇周期为8秒时，横摇最剧烈
D.
A、B、C都正确
【单选题】关于波浪作用力的计算以下说法正确的是
A.
海洋结构物的波浪力都可以应用莫里森方程计算
B.
莫里森方程考虑了粘滞效应和附加质量效应
C.
多桩柱存在时计算波浪力不需要考虑彼此的影响
D.
前后两桩柱的最大合波力计算只需要计算单桩柱的最大波力乘以2即可
【单选题】所有爱斯基摩人都是穿黑衣服的，所有北婆罗洲人都是穿白衣服的，没有穿白衣服又穿黑衣服的人，H是穿白衣服的人，基于以上事实，下面()项判断必为真。
A.
H是爱斯基摩人
B.
H是北婆罗洲人
C.
H既不是爱斯基摩人又不是北婆罗洲人
D.
H不是北婆罗洲人
E.
H不是爱斯基摩人
【单选题】Ancient Egypt Brought Down by Famine Even ancient Egypt’s mighty pyramid (金字塔) builders were powerless in the face of the famine (饥荒) that helped bring down their civilization around 2180 BC. Now evid...
A.
The White Nile is the trunk of the River Nile.
B.
The White Nile is the trunk of the Blue Nile.
C.
The White Nile is a branch of the Blue Nile.
D.
The White Nile is a branch of the River Nile.
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