题目

下列物态变化中属于放热现象的是哪一组（） ①初春，冰封的湖面解冻 ②盛夏，旷野里雾的形成 ③深秋，路边的小草上结了一层霜④严冬，冰冻的衣服逐渐变干． A . ①② B . ②③ C . ③④ D . ①④ 答案：B完成情景对话Dog：Where are you going?Cat：1_____________ But I am lost.Dog：I can help you.Cat：Is that far from here?Dog：2______________Cat：3________________Dog：You can go there by bus.Cat：4________________ Dog：Go straight and turn right at the traffic lights.Cat：Thanks!Dog：5________________1.A、I am going to visit my sister. B、I am walking. C、I am taking a taxi. 2.A、Where is it? B、Yes.It’s far. C、Thanks. 3.A、How can I go there? B、Where is my sister’s home? C、Go straight and turn left. 4.A、What time is it? B、Where is the bus stop? C、Here it is. 5.A、Fine,thanks. B、You are welcome. C、I am fine.