新疆棉绒长、品质好,是不少知名服装品牌的原材料之一。服装面料成分多样,通过燃烧能产生气味的方法来判断面料的成分,这是利用棉的() A . 化学性质 B . 化学变化 C . 物理性质 D . 物理变化 答案:A
听对话,然后根据对话内容选择每个问题的正确答案,对话和问题读两遍。
( )1. A. He has got a cold. ( )2. A. Playing computer games( )3. A. One pill. ( )4. A. Half an hour a day. ( )5. A. Relax a little.
B. He has got a fever. B. Sleeping all day. B. A warm bath. B. Three times a day. B. Take more pills once
C. He has got a headache.C. Dreaming. all night. C. More water. C. Once a day. C. Go to bed early.