.If you have a headache,toothache,backache,earache or bad pain in the stomach.

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• .If you have a headache,toothache,backache,earache or bad pain in the stomach.
• 分别用so 和because 来连接以下各组句子.1 I have a temperature.I have a temperature so I must go to bed.I must go to bed.I must go to bed because I have a temperature.2 You have flu.____________________________________ You must stay at home.____________________________________ 3 She has a toothache.____________________________________ She must see a dentist.____________________________________4 He has a bad headache.____________________________________He must take a
• .If you have a headache,toothache,backache,earache or bad pain in the stomach.
• Is there anything more important than health?I don’t think so.Health is the greatest wealth,wise people say.you can'tbe good at your studies or work well when you are ill.If you have a headache,toothache,backache,earache or bad pain in the stomach......
• 一物体静止在水平地面上，下列说法正确的是（　　） A.物体对地面的压力就是重力 B.物体所受的重力使地面发生了形变 C.物体由于形变而对地面产生了压力 D.物体对地面的压力使地面产生形变
• 总质量为M的列车,沿水平直线轨道匀速前进,其末节车厢质量为m,中途脱节,司机发觉时,机车已行驶L的距离,于是立即关闭油门,除去牵引力.设运动的阻力与质量成正比,机车的牵引力是恒定的,求当列车的两部分都停止时,它们间的距离是多少?