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A pet is an animal that (21) in your house. Over half the families in North America own pets. The most popular (22) are dogs, fish and birds. Rabbits, hamsters and turtles are also popular. Even some unpopular animals such as frogs, mice and snakes are pets.People first (23) to keep pets about 12,000 years ago. The first pet was a dog. The dog did not become a pet because people (24) it was cute. It became a pet because it was useful. People used the dog for many things. The dog warned people (25) danger so wild animals didn’t attack people. It also ate left-over food. Later, dogs helped people take care (26) cows and sheep on farms.Cats did not (27) pets for a long time. When the Egyptians first started to grow grain, mice ate it. The Egyptians were (28) to tame cats.Today, people keep many (29) of pets. Animals such as canaries, parrots, mice and hamsters live in cages. They need people to bring them food and water and to keep their cages clean. Other animals, such as dogs and cats, need food and water, but they can take care of themselves (30) .They are good pets for people because they don’t need much care. 30（）
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Passage FiveAlthough no one is certain why migration occurs, there are several theories. One theory is based upon the premise that prehistoric birds of the northen Hemisphere were forced south during the Ice Age, when glaciers covered large parts of Europe, Asia, and North America. As the glaciers melted, the birds came back to their homelands, spent the summer, and then went south again as the ice advanced in winter. In time, the migration became a habit, and now, although the glaciers have disappeared, the habit continues.Another theory proposes that the ancestral home of all modern birds was the tropics. When the region became overpopulated, many species were crowded north. During the summer, there was plenty of food, but during the winter, scarcity forced them to return to the tropics.A more recent theory, known as photoperiodism, suggests a relationship between increasing daylight and the stimulation of certain glands in the birds’ bodies that may prepare them for migration. One scientist has been able to cause midwinter migrations by exposing birds to artificial periods of daylight. He has concluded that changes occur in the bodies of birds due to seasonal changes in the length of daylight. The author states that birds left the tropics because （）
下列不是酬金制和包干制的财务特征的是( )。
行政管理部的主要职责是( )。
Passage FourWhy is there no risk to the customer when a bank prints the customer’s name to his chequesWhen anyone opens a current account at a bank, he is lending the bank money, repayment of which he may demand at any time, either in cash or by drawing a check in favor of another person. Primarily, the bank-customer relationship is that of debtor and creditor who is which depending on whether the customer’s account is in credit or overdrawn. But, in addition to that basically simple concept, the bank and its customer owe a large number of obligations to one another. Many of these obligations can give rise to problems and complications but a bank customer, unlike, say, a buyer of goods, cannot complain that the law is loaded against him. The bank must obey its customer’s instructions, and not those of anyone else. When, for example, a customer first opens an account, he instructs the bank to debit (把……记入借方) his account only in respect of checks drawn by himself. He gives the bank specimens of his signature, and there is a very firm rule that the bank has no right or authority to pay out a customer’s money on a check on which its customer’s signature has been forged. It makes no difference that the forgery may have been a very skillful one: the bank must recognize its customer’s signature. For this reason there is no risk to the customer in the practice, adopted day banks, of printing the customer’s name on his checks, ff this facilitates forgery, it is the bank which will lose, not the customer. If someone forged your signature and drew money from your account （）
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