【正文】 ut adults hunt for bigger prey like snakes, monkeys and cattle. And they have been known to attack humans. Freshwater crocodiles, however, aren39。t as big as saltwater ones either, reaching a length of three metres at most. Crocodiles first appeared 200 million years ago and lived originally on land. But they soon evolved into aquatic (水生的 ) animals. These reptiles are excellent predators (肉食動(dòng)物 ) and have few natural enemies. Crocodiles have about 30 or 40 teeth in each jaw. And it is the jaw that gives a unique feature to them. A crocodile can close its jaws with such force that it can break the bones of some animals. Yet, once the jaws are shut, they39。s hand. To reproduce, crocodiles, like other reptiles, lay eggs. One female can produce between 20 and 90 eggs at a time. Once laid, female crocodiles bury their eggs in sand or mud, where they are left to hatch. Some females stay in the area to protect the nest and look after the young after they hatch, but often other predators eat the eggs. 64. The largest crocodiles in Australia can reach a length of ______. A. three metres B. five metres C. eight metres D. ten metres 65. What do saltwater crocodiles and freshwater crocodiles have in mon? A. They have the same size. B. They both live in freshwater streams. C. They are usually both dangerous to people. D. They both live in northern Australia. 66. We can infer from Paragraph 7 that ______. A. crocodiles close their jaws very quickly B. crocodiles39。 jaws are very powerful when closing 67. What usually happens after crocodile eggs are laid? A. The eggs will be kept under the ground. B. The eggs will be hatched by their parents. C. The male crocodiles will protect the eggs. D. The female crocodiles will leave the nest. D Earlier this year, my oldest daughter got braces (矯正器 ) on her teeth, and let39。s chair. Fear and hate pretty much describe the days leading up to her first appointment. So when she finally walked out with shiny teeth, a sore (疼痛的 ) mouth and a broken spirit, I told her I was proud of her and took her to Ben amp。 Jerry39。t going to get a reward every time we get her teeth checked. Clearly, she39。s not all ice creams, candies and cool toys. Some parents are offering their children prizes to just let them sit down and behave in a restaurant — or sleep in their own beds — or score a goal in the next soccer game. While the experts agree that occasional awards are okay, the danger lies in the system39。s illness. C. His / her daughter had a bad feeling for the dentist39。s daughter, children ______. A. are often troubled by bad teeth B. receive certain rewards when being ill C. are afraid to visit a dentist D. expect more rewards from their parents 71. Misguided by the parental reward system, children easily think ______. A. they should benefit from their every desired be havior B. they can be successful as long as they work hard C. their parents must be far more rich than others39。s a man39。ll be.” However, the daughter was a rebellious one. For example, Faust would fight with her mother over whether it was suitable for her to drive a car at night, even if one of her three brothers was a passenger. “She was raised to be a rich man 39。s black handyman (雜務(wù)工 ) and driver, she sent a letter to President Dwight D. Eisenhower decrying（譴責(zé)） racial injustice. When studying in Bryn Mawr, a women39。ve often thought about that,” she said. “I 39。s mother expected Faust to be ______. A. Harvard39。s new president B. A woman fighter for American civil rights C. A “rebellious daughter” to lead Harvard D. A portrait of Harvard39。詞數(shù)：120左右。它的叫聲嘶啞，因而在電影和電視中表現(xiàn)叢林聲音時(shí)，它的叫聲通常被用作背景音。它不吃魚，主要捕食老鼠、小鳥(niǎo)、蛇和昆蟲(chóng)，但在西部，它們也捕食雞和小鴨子。s unique call sounds a kind of hoarse laughter. In fact, the bird39。t hunt for fish, preferring to feed on insects, mice, small birds and snakes, but in Western Australia, they sometimes attack chickens and baby ducks.