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Unit 4-Exercise 7 Koala P52-53Listen to the talk and write down the missing information in the notes below.[音频]Koala is the Australian teddy bear. It is 1. feet long, with 2. seeming as if they were stuck on, and it has beady eyes but no 3. . The fur is 4. in color. They are pouched mammals, not bears at all.Koalas spend almost all their lives in the eucalyptus trees and eat the 5. . All the toes are armed with 6. claws, and the 7. are divided into two groups. The great 8. is thumb-like. All of these features aid in climbing. Koalas are able to spring from one upright branch to another with 9. skill.The baby is carried in the 10. at first, then it clings to the fur of the mother’s 11. until it is almost as large as the mother. Koalas become quite tame and they are great 12. __ at the Australian zoos and parks.

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Unit 4-Exercise 11 Inventor of the telephone (1) P54-55Listen to the first part of the talk about the inventor of the telephone. As you listen to the talk, write down the missing information in the notes below.[音频]The man who invented the telephone was Alexander Graham Bell. He was born in Edinburgh,Scotland, in 1. _______· His father and grandfather had both been teachers of 2. _. His father had worked out a system of “Visible Speech”, that is, a system by which a deaf person can “see” what people say by reading 3. _. Bell learned this system and soon he 4. _ a teacher of the deaf too, and he opened his 5. _ school for the deaf people in Canada.Through his teaching, Bell became interested in the 6. _ of the human voice. He thought that it should be possible to 7. _ sound across a distance. He worked very hard with his assistant Thomas A. Watson day and night on this idea. They made some 8. _______and tried again after each failure.

工业企业的主要经营过程一般可分为三个阶段，即（）过程、（）过程和（）过程。

企业筹集资金的渠道一般包括：一是接受（），二是发行（），三是（）。

固定资产是指企业为（）、（）、（）或（）而持有的，使用寿命超过（）的（）。