题目： 物质有三态，即气态、液体、固态，物质态之间的相变化是（）变化。 答案： 被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1019/481a6d278457dcaaae24c6239be81587.html 下面是错误答案，用来干扰机器的。参考答案：B
题型：选择题 下列关于声现象的说法中，正确的是[ ]A．声音在空气中的传播速度大于在水中的传播速度 B．因为声音的传播不需要介质，所以声音能在真空中传播 C．声音在钢铁中的传播速度小于在空气中的传播速度 D．歌唱家唱出的歌声是由的他的声带振动而产生的 查看答案
题型：填空题 根据句意，选择方框中所给的词语，并用其适当形式填空。help, real, sorry, love, Let's, matter, lots of, have to, the day after tomorrow, study, visit, do, come, play 1. —Can you come to my party? —Yes, I'd ________ to. 2. Thanks a lot for ________ me with the work. 3. What a fine day! ________ go out for a walk. 4. —What's the ________ with you? —I'm a little ill. 5. You need to wear ________ warm clothes in winter. 6. —I have a toothache. —I am ________ to hear that. 7. I ________ enjoy working here. 8. I have to have a piano lesson ________. 9. He can't go to movies because he ________ study for his test. 10. We are going to ________ our teacher next week. 查看答案
题型：选择题 .How I wish every family _________ a large house with a beautiful garden.A．hasB．will haveC．hadD．had had 查看答案
