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【简答题】

In 1981, there were more than 1.3 million elephants in Africa. But in 1991, that number was cut down to 600,000. African elephants are hunted for their valuable ivory tusks(象牙). More have been killed by poachers(偷猎者). Poachers are hunters who kill animals illegally . An (成年) elephant eats as much as 300 pounds a day. In their search for food, elephants oft en move great distances. When they cannot find the grasses they prefer, they may strip(剥光) the land of trees. Today, the area in which elephants herds live is smaller than it used to be. Many areas in their path have been turned into farms. And some eleph ants have been killed by f armers for trampling(践踏)their crops. What can we do here in our country about a threatened animal that lives so far away? Our government has passe d a law to protect it. People cannot import or bring in items made from ivory or any part of the elephant’s body. Most countries throughout the world have also stopped ivory imports. It is hoped that the ban(禁令) on the sale of ivory will help save the African elephant. But the world’s largest land animal needs other help. The countries where these animals live are often poor and unable to manage the herds. If the elephant is to survive, this animal is going to need our support for many years to come. 小题1:The number of the elephant in Africa in 1991 was . A.the same as that ten years ago B.more than that ten years ago C.a little less than half of that in 1981 D.a little more than half of that in 1981 小题2:African elephants have been killed mainly because _____. A.they eat a lot B.they have beautiful tusks C.poachers kill for fun D.there are too many of them 小题3: The areas where African elephants live are much smaller today because ___. A.they tend to live in herds B.there are not so many of them today C.many of these areas have been t urned into farms D.farmers have been killing them to save their crops 小题4:It is mentioned in the passage that our country has ____. A.officially stopped ivory imports B.banned the killing of elephants in Africa C.threatened the elephants that live far away D.helped the African countries where elephants live 小题5: Which of the f ollowing statements is TRUE? A.Poachers have a license(执照) to hunt for animals. B.Elephants do a lot of good for the farmers in Africa. C.We live too far away to help to save the African elephants. D.The African elephant needs the world’s support for its s urvival

题目标签:象牙
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【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】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】骨制品和象牙的区别是:()

A.
折射率       
B.
密度       
C.
结构      
D.
化学成分