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How can a creature weighing over 5 tons and normally taking 150 kilograms of food and 120 liters of water per day survive in a desert environment?
In the southwest African country of Namibia,and the Sahara lands of Mall further north,the desert elephant does just that.
Although not regarded as a separate species from the African elephant,the desert cousin differs in many ways.Their bodies are smaller,to absorb less heat,and their feet are larger for easier walking across sandy suces.They are taller,to reach higher branches.They have shorter tusks(象牙),and most importantly,longer trunks to dig for water in riverbeds.
Desert elephants can travel over 70 kilometers in search for feeding grounds and water-holes,and have a larger group of families.They drink only every 3-4 days,and can store water in a “bag” at the back of their throat,which is only used when badly needed.Desert elephants are careful feeders—they seldom root up trees and break fewer branches,and thus maintain what little food sources are available.Young elephants may even eat the dung(粪便) of the female leader of a group when facing food shortage.
During drought they are unlikely to give birth to their young but with good rains the birthrate will increase greatly.Desert elephants have sand baths,sometimes adding their own urine(尿液) to make them muddy!
As we continue to overheat our weak planet,it can only be hoped that other animal species will adapt as extraordinarily well to change as the desert elephant.
小题1:The underlined part in Paragraph 2 means “_______”.A．remains in the African countriesB．drinks 120 liters of water a dayC．manages to live in desert areasD．eats 150 kilograms of food daily小题2:Desert elephants are called careful feeders because they______.A．rarely ruin treesB．drink only every 3-4 daysC．search for food in large groupsD．protect food sources for their young小题3:The author answers the question raised in the first paragraph with______.A．stories and explanationB．facts and descriptionsC．examples and conclusionD．evidence and argument小题4:What can be inferred from the last sentence in the passage?A．Overheating the earth can be stopped.B．Not all animal species are so adaptable.C．The planet will become hotter and hotter.D．Not all animals are as smart as desert elephants.
题目标签：象牙
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【单选题】Elephants are perhaps the only animals that are hunted for their teeth. Elephant tusks, or very large teeth growing on either side of their mouths, are composed of a valuable material called ivory(象牙)...
A.
large and heavy tusks
B.
small, short tusks or none at all
C.
small and heavy tusks
D.
long, light tusks
【单选题】2021年3月20日，“考古中国”重大项目工作进展会通报，三星堆遗址考古新发现6座“祭祀坑”，现已出土金面具残片、巨青铜面具、青铜神树象牙等重要文物500余件。据介绍，三星堆遗址是四川盆地目前发现（）时期规模最大、等级最高的中心性遗址。
A.
东周
B.
西周
C.
春秋战国
D.
夏商
【单选题】1960—1970年间，非洲国家津巴库的象牙偷猎者杀了6500多头大象。同期，津巴库的大象总数从大约35000头下降到不到30000头。1970年，津巴库实行了新的反偷猎措施。1970—1980年间，有800多名偷猎者被捕或被驱逐出境。但到1980年，津巴库的大象总数下降到约21000头。 以下答案若均属实，哪一个最有助于解释以上矛盾
A.
1970—1980年间在津巴库被捕的偷猎者很少被处以长期徒刑。
B.
由于广泛开展的反对屠杀大象的公众运动，1970—1980年间象牙需求量下降了。
C.
1970—1980年间，邻国孟巴萨的大象总数有小幅上升。
D.
1970年以前，津巴库议会通过的反偷猎法很少得到实施。
E.
1970—1980年间，津巴库的几千亩森林——大象的自然栖息地被夷为农田。
【单选题】一项研究显示，数十年盗猎大象的活动在某种程度上已经改变了非洲象进化方向，天生没有象牙的雌象越来越多。研究人员认为这一现象说明人类活动对生物进化的影响之大，甚至能够“改变动物身体构造”。以下哪项为真，则最能削弱上述结论：
A.
雌象的象牙质地较雄象的象牙细腻，是盗猎者的主要目标
B.
大象的体型巨大，即便是食物链顶端的狮子也不敢猎食大象
C.
数十年间，盗猎非洲象牙的活动从未停止过
D.
无论哪里的大象，总有一部分雌象原本就是不长象牙的
【单选题】Passage Four Elephants don’t forget—at least, female elephants don’t. Elephant families are matriarchal. And the social knowledge gained by the oldest females is the key to a family grou...
A.
run into other elephant families
B.
give wrong warnings to their mothers
C.
run away on hearing a strange sound
D.
produce more babies by gathering together often
【单选题】美国P&G公司的产品包括：象牙肥皂、海飞丝洗发水、飘柔洗发水、玉兰油等，其采用的商标策略是（）
A.
个别品牌
B.
品牌延伸策略
C.
多重品牌策略
D.
家族品牌策略
【单选题】Passage Four Elephants don’t forget—at least, female elephants don’t. Elephant families are matriarchal. And the social knowledge gained by the oldest females is the key to a family grou...
A.
the stronger she will be
B.
the poorer memory she will have
C.
the more useless her tusks will be
D.
the more likely she will be killed
【单选题】人造象牙中，主要成分是 ，它是通过加聚反应制得的，则合成此高聚物的单体是______
A.
B.
A．(CH 3 ) 2 O
C.
B．HCHO
D.
C．CH 3 CHO
E.
D． 
【单选题】Passage Four Elephants don’t forget—at least, female elephants don’t. Elephant families are matriarchal. And the social knowledge gained by the oldest females is the key to a family grou...
A.
how fast elephants form into groups
B.
how important the age of a leading elephant is
C.
how frightened elephants are when hearing a strange call
D.
how frequently old elephants call other members of the family
相关题目：
【单选题】Elephants are perhaps the only animals that are hunted for their teeth. Elephant tusks, or very large teeth growing on either side of their mouths, are composed of a valuable material called ivory(象牙)...
A.
large and heavy tusks
B.
small, short tusks or none at all
C.
small and heavy tusks
D.
long, light tusks
【单选题】2021年3月20日，“考古中国”重大项目工作进展会通报，三星堆遗址考古新发现6座“祭祀坑”，现已出土金面具残片、巨青铜面具、青铜神树象牙等重要文物500余件。据介绍，三星堆遗址是四川盆地目前发现（）时期规模最大、等级最高的中心性遗址。
A.
东周
B.
西周
C.
春秋战国
D.
夏商
【单选题】1960—1970年间，非洲国家津巴库的象牙偷猎者杀了6500多头大象。同期，津巴库的大象总数从大约35000头下降到不到30000头。1970年，津巴库实行了新的反偷猎措施。1970—1980年间，有800多名偷猎者被捕或被驱逐出境。但到1980年，津巴库的大象总数下降到约21000头。 以下答案若均属实，哪一个最有助于解释以上矛盾
A.
1970—1980年间在津巴库被捕的偷猎者很少被处以长期徒刑。
B.
由于广泛开展的反对屠杀大象的公众运动，1970—1980年间象牙需求量下降了。
C.
1970—1980年间，邻国孟巴萨的大象总数有小幅上升。
D.
1970年以前，津巴库议会通过的反偷猎法很少得到实施。
E.
1970—1980年间，津巴库的几千亩森林——大象的自然栖息地被夷为农田。
【单选题】一项研究显示，数十年盗猎大象的活动在某种程度上已经改变了非洲象进化方向，天生没有象牙的雌象越来越多。研究人员认为这一现象说明人类活动对生物进化的影响之大，甚至能够“改变动物身体构造”。以下哪项为真，则最能削弱上述结论：
A.
雌象的象牙质地较雄象的象牙细腻，是盗猎者的主要目标
B.
大象的体型巨大，即便是食物链顶端的狮子也不敢猎食大象
C.
数十年间，盗猎非洲象牙的活动从未停止过
D.
无论哪里的大象，总有一部分雌象原本就是不长象牙的
【单选题】Passage Four Elephants don’t forget—at least, female elephants don’t. Elephant families are matriarchal. And the social knowledge gained by the oldest females is the key to a family grou...
A.
run into other elephant families
B.
give wrong warnings to their mothers
C.
run away on hearing a strange sound
D.
produce more babies by gathering together often
【单选题】美国P&G公司的产品包括：象牙肥皂、海飞丝洗发水、飘柔洗发水、玉兰油等，其采用的商标策略是（）
A.
个别品牌
B.
品牌延伸策略
C.
多重品牌策略
D.
家族品牌策略
【单选题】Passage Four Elephants don’t forget—at least, female elephants don’t. Elephant families are matriarchal. And the social knowledge gained by the oldest females is the key to a family grou...
A.
the stronger she will be
B.
the poorer memory she will have
C.
the more useless her tusks will be
D.
the more likely she will be killed
【单选题】人造象牙中，主要成分是 ，它是通过加聚反应制得的，则合成此高聚物的单体是______
A.
B.
A．(CH 3 ) 2 O
C.
B．HCHO
D.
C．CH 3 CHO
E.
D．
【单选题】Passage Four Elephants don’t forget—at least, female elephants don’t. Elephant families are matriarchal. And the social knowledge gained by the oldest females is the key to a family grou...
A.
how fast elephants form into groups
B.
how important the age of a leading elephant is
C.
how frightened elephants are when hearing a strange call
D.
how frequently old elephants call other members of the family
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