题目

根据括号内的要求改写下列句子，每空一词，并把答案写在题后的横线上。 1．It is my first time to be in a plane，so I don’t know what I should do．(改为同义句) It is my first time to travel by plane，so I don’t know what                   . 2．“I am popular at school”he said．(将直接引语改为间接引语)     He said                   popular at school at school． 3．What’s wrong with you?(改为同义句)     What’s                     with you? 4．He was reading a book on运动员关节扭伤后，马上给他喷涂一种雾状的极易挥发的液态氯乙烷，用它作麻醉剂可使运动员的皮肤迅速冷却，在一段时间内失去疼痛感，这是由于氯乙烷（ ）A．汽化吸热 B．凝固放热 C．熔化吸热 D．升华吸热