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he end of each wing tip. Using these four claws, together with the beak (喙 ), they can climb about in the bushes, looking very much like primitive birds must have done. When the young hoatzins have learned to fly, they lose their claws. During the drier months between December and March hoatzins fly about the forest in groups of 20 to 30 birds, but in April, when the rainy season begins, they collect together in smaller living units of two to seven birds for producing purposes. 1. What is the text mainly about? A. Hoatzins in dry and rainy seasons. B. The relatives and enemies of hoatzins. C. Primitive birds and hoatzins of the Amazon. D. The appearance and living habits of hoatzins. 答案: D 解析: 語篇解讀題。 3. What can we infer about primitive birds from the text? A. They had claws to help them climb. B. They could fly long distances. C. They had four wings like hoatzins. D. They had a head with long feathers on the top. 答案: A 解析: 推理判斷題。 B Mahender Singh, a 25 year old hand of his trade, is one of the street dentists in India. But the street dentists cannot be seen everywhere as before. It is said that fewer than 100 remain. India has 80, 000 dentists with degrees and offices. Each year, 11,200 join the field. Mr. Singh did not go to college. He learned his skill from his father. Later, he taught his son, now 25, on a sidewalk in the busy area near the “ old city” . Between patients, Mr. Singh often puts his fingers into a patient39。s patients are mostly ________. A. poor people B. foreign people C. old people D. government officials 答案: A 解析: 推理判斷題。 7. What might be the disadvantages of the street dentists? A. Their working place is dependable and crowded B. Their working place is dirty and crowded. C. They are careless and lazy. D. They are old and selfish. 答案: B 解析: 細(xì)節(jié)理解題。