o the sun, the sea and the wind for natural source of energy.Р42.人们现在正转向太阳、大海和风,为自然的能源.Р Р43. In the old day, people observed the behavior of animals for signs of earthquakes.Р43.在旧的一天,人们观察到动物的行为,为地震的迹象.Р Р44. Sorry. I have no time to go to the cinema with you. I am occupied with my homework.Р44.对不起的.我没有时间和你一起去看电影了.我占用了我的家庭作业.Р Р45. After a heated discussion, they arrived at the conclusion that they should build up a supermarket in their town.Р45.经过激烈的讨论,他们得出结论,他们应该在他们的镇上建立一个超市.Р Р46. Mary talks a lot. In contrast, her sister is quite silent.Р46.玛丽谈了很多.相比之下,她妹妹很沉默.Р Р47. I think the driver should be responsible for the accident.Р47.我认为司机应该对事故负责.Р Р48. Many people love to read his book, particularly the young.Р48.许多人喜欢读他的书,特别是年轻人.Р Р49. I’ll leave him a note so that he’ll know where we are.
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