单选题Living in the central American desert has its problems,_______obtaining water is not the least.Aof whichBfor whatCasDwhose
单选题
Living in the central American desert has its problems,_______obtaining water is not the least.
A
of which
B
for what
C
as
D
whose
参考解析
解析：
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Passage TwoOnly one animal can walk 200 miles without stopping once to rest. It would take a person two days and two nights to walk this far, and only one man has ever done it without stopping. What amazing animal has such endurance? The camel! The camel is well known for something else, too. It can cross an entire desert without a single drink of water. Its body is built in a special way to help it store water and food.A person has just one stomach, but a camel has quite a few. Within each stomach are layers and layers of cells. These cells are like tiny water balloons, storing liquids until the camel needs them. When the camel drinks, the cells grow larger and larger. For a whole week, they can keep the animal's thirst away by sending water to all parts of its body.And did you ever wonder why the camel has a hump? The hump is a storage place for fat. Because it has this storage area, the camel does not need to eat very often. When the animal needs energy, the layers of fat serve as fuel to keep it going on the long, hot days in the burning sun.The camel has one other gift that makes it well suited to arid regions. This gift is its amazing nose. A camel can smell a water hole from miles away!When a camel moves it sways from side to side like a ship on a wavy ocean. Because of this swaying motion, the camel has been called the "Ship of the Desert."40. The camel's hump is a storage place for ______.A. musclesB. extra waterC. body sugarsD. fat
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It is that feeling of belonging, of love and security ____ comes from living together, helping and sharing.A、whichB、whatC、whoD、that
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共用题干WaterFrom the beginning,water has furnished man with a source of food and a highway to travel upon.The first civilization arose(51)________water was a dominant element in the environment,a challenge(52)______man's ingenuity.The Egyptians invented the 365一day calendar in response to the Nile's annual flooding. The Babylonians,(53)________were among the most famous lawmakers in ancient times,invented laws(54)_________ water usage.Water inspired the Chinese to build a 1,000-(55)________canal,a complex system which,after nearly 2,500 years,remains still practically(56)_______ and still commands the astonishment of engineers.But (57)_________never found complete solutions to their water problems.The Yellow River is also known as "China's Sorrow" ;it is so unpredictable and dangerous(58)_________in a single flood it has caused a million(59)________.Floods slowed the great(60)_________of the Indus River Valley,and inadequate drainage ruined (61)________of its land. Today water dominates man (62)_______it always has done.Its presence continues to(63)________the location of his homes and cities;its violent variability can(64)________man or his herds or his crops;its routes links him(65)________his fellows;its immense value may add to already dangerous political conflicts.There are many examples of this in our own time._________(51)A:where B:the placeC:when D:in the place
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