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).
An elephant uses its long, pointed tusks as tools for digging in the ground for food. He also uses them as weapons in combat.
The tusks of male elephants are usually large and heavy. In Africa, female elephants have long, light tusks. In India and other parts of southern Asia, female elephants have small, short tusks or none at all.
Tusks in good condition are in great demand, and may sell for as high as two thousand dollars or more. Because of this, large numbers of elephants have been killed. Some countries have initiated (开始) methods to protect elephants. They have established elephant preserves, areas of land set aside for herds of elephants where no one is allowed to harm them. Elephants on the preserves are safe from ivory hunters.

单选题 Female elephants in India and southern Asia have ______ .
A. large and heavy tusks B. small, short tusks or none at all
C. small and heavy tusks D. long, light tusks

【正确答案】 B

【答案解析】细节题。根据大写的地名回文中定位，可迅速查找出第三段：“In India and other parts of southern Asia. female elephants have small，short tusks or none at all”(在印度和南亚的其他地区，雌象的象牙短小或根本没有。)因此答案选B。

单选题 How much may a tusk in good condition sell for?
A. Exactly ＄2,000. B. Almost ＄2,000. C. Less than ＄2,000. D. ＄2,000 or more.

【正确答案】 D

【答案解析】细节题。数字题为常见考题。根据选项迅速在原文中查找和数字相关的句子。由第四段“Tusks in good condition are in great demand，and may sell for as high as two thousand dollars or more．”(好象牙供不应求，价格可高达＄2000或更高。)可知答案为D。

单选题 How do some countries protect elephants from being hunted?
A. By persuading ivory hunters. B. By trying to take more care of elephants.
C. By establishing elephant preserves. D. By fighting with ivory hunters.

【正确答案】 C

【答案解析】细节题。根据原文第四段“They have established elephant preserves．”(他们建立了大象保护区。)，答案明显是C。

单选题 "This" in Paragraph 4 probably refers to ______ .
A. the tusks of male elephants are usually large and heavy
B. tusks in good condition are in great demand, and may sell for as high as two thousand dollars or more
C. elephants are perhaps the only animals that are hunted for their teeth
D. an elephant uses its long, pointed tusks as tools for digging in the ground for food

【正确答案】 B

【答案解析】细节题。this指代前面提到的内容。根据原文，因为象牙需求很大，导致价格很高，所以很多大象被捕杀。

单选题 What does the writer imply according to the passage?
A. Male elephants are hunted more than female elephants.
B. Both male elephants and female elephants are equally hunted.
C. Each elephant has a long life.
D. There are not any ivory hunters in the world now.

【正确答案】 A

【答案解析】主旨题。综合上下文，由于雄性大象的象牙更大，更坚硬，质地更好，可以卖到更高的价钱，所以被捕杀得更多。