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¡¡¡¡People's appearance
£¨Íâò£©depends on things called genes£¨»ùÒò£©. Genes are found in the cells£¨Ï¸°û£©of people's bodies, and they are passed on from parents to children. Here are some facts about eyes.¡¡¡¡Many Europeans and Americans can have blue, green or brown eyes. But a brown-eyed person, for example, may also carry genes for another colour in his/her body. So two brown-eyed or green-eyed parents may not have a child with the same colour eyes. If a child's father and mother both have brown eyes the child will probably also have brown eyes. but this is not certain.
¡¡¡¡If one parent has blue eyes and one has brown eyes, their children may have either blue eyes or brown eyes, but most will probably have brown eyes. The gene for blue eyes is recessive
£¨ÒþÐԵģ©and the gene for brown eyes is dominant£¨ÏÔÐԵģ©. This means that if a child gets a gene for blue eyes and also a gene for brown eyes from its parents, brown will win, and the child's eyes will be brown, not blue.Judge the following sentences True or False according to the passage
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T¡±´íÎóµÄд¡°F¡±£©(1) Children look like their parents because they get genes from their parents.
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¡¡¡¡](2) A brown-eyed person only carries the gene for brown eyes in his/her body.
[
¡¡¡¡](3) If a child had brown eyes, the child's parent may have other colour eyes.
[
¡¡¡¡](4) If a child's father and mother both have green eyes, the child's eyes must be green.
[
¡¡¡¡](5) If one parent had blue eyes and one had brown eyes, their child mostly had brown eyes.
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(1) T ¸ù¾Ý¶ÌÎĵĵÚÒ»¶Î¡£(2) F ¸ù¾ÝµÚ¶þ¶ÎµÄµÚ¶þ¾äÅжÏÕâ¾ä³ÂÊöÊÇ´íÎóµÄ¡£(3) T ¸ù¾ÝµÚÈý¶ÎµÄµÚÒ»¾ä¿ÉÖª¡£(4) F ¸ù¾ÝµÚ¶þ¶ÎµÄµÚÈý¾ä£ºSo two brown-eyed or green-eyed parents may not have a child with the same colour eyes.Á½¸öÂÌÑÛ¾¦µÄ¸¸Ä¸¿ÉÄÜÉú²»³öºÍËûÃÇͬÖÖÑÕÉ«µÄÑÛ¾¦µÄº¢×Ó¡£(5) T ¸ù¾ÝÎÄÕµÄ×îºóÒ»¶Î¡£ |
As we all know, the environment around us is getting worse and worse. In some places we can¡¯t see fish ¡¡26 in the river or trees on the hills. Some people even have no clean water to drink.
Recently, a new lifestyle called low carbon life is ¡¡27 every comer of our country. The meanings of low carbon are ¡¡28 energy and no waste. It is such an important project that I can¡¯t wait 29 my ideas on how to promote it.
First£¬we should ¡¡30 a no-car day every week in our school. Because cars not only cause serious air pollution but also waste energy. ¡¡31 the no-car day, neither students ¡¡32 teachers are allowed to drive to school. At the same time£¬just walk or run. Use our ¡¡33 and enjoy the fun.
Second, we had better not use plastic bags ¡¡34 . No one can stand the ¡°white pollution¡±£¬ ¡¡35 it is wise to use cloth bags which can ¡¡36 again and again.
37 £¬one thing ¡¡38 we should keep in mind is that every big thing comes from the small details. So, as students, we ought to turn ¡¡39 the lights the moment we leave, use 40 sides of the paper, and reuse our textbooks and so on.
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All in all, it weighs greatly for all of us to put the low carbon lifestyle into practice. Just set our mind to these£ºno-car days, no plastic bags, and no waste. Let¡¯s do it now.
26. A. swims¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. swimming¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. to swim ¡¡¡¡¡¡D. swam
27. A. spreading¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. moving ¡¡C. living¡¡¡¡ ¡¡D. becoming
28. A. below¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. high¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. above¡¡¡¡ D. low
29. A. to express ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. express ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. expressing¡¡¡¡D. expressed
30. A. set off¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. set up¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. put on¡¡ ¡¡¡¡¡¡D. put down
31. A. in¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. at ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. on ¡¡¡¡ D. with
32. A. nor¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. or ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. both¡¡¡¡¡¡ D. and
33. A. foot ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡ B. cars ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. buses¡¡¡¡ ¡¡D. legs
34. A. any more¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. no more ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. no longer¡¡¡¡ D. never
35. A. because¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. so ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. but¡¡¡¡¡¡¡¡ ¡¡D. although
36. A. reused¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. be used ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. is used¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. use
37. A. Finally¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. Final¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. Last¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. Lately
38. A. who ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. what¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. that¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. whose
39. A. up¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. down¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. on D. off
40. A. both ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. each¡¡¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. every¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. all