四年级倍速英语

1-5 DDAAD 6-10 CBBDC 11-15 CDBDB16-20 DABBC 21-25 CABBC 26-30 BACCD31-35 BCADD 36. invent 37. geography 38. hero 39. spoon 40. camel41. covered 42. dangerous 43. twentieth 44. stand out 45. Pollution 46. They made all the kites by hand 47. Did you throw away the rubbish 48. Don’t park your car by the sidewalk 49. How long have they been abroad 50. She said she had finished the work 51-55 DABEC 56. twentieth 57. happy 58. sending 59. funny 60. cut 61. interesting 62. named 63. really 64. reading 65. hear 66-70 DGABEOne possible version:Advantages and disadvantages of the InternetIn the modern world, the Internet has come into our life. Lots of students use the Internet as a tool for their studies. They look up the meanings of new words and learn history or geography on the Internet. They also use the Internet to read news or send e-mails.But every coin has two sides. Some students spend too much time playing online games and chatting with friends. They are not interested in their studies. At the same time, they become weaker and weaker in body. In a word, the Internet brings us not only a lot of convenience but also troubles. As students, we should make good use of the Internet.