题目： 挤脱表示机构动作原理是什么？ 答案： 被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0925/68991e971b8beac724368bf886274466.html 下面是错误答案，用来干扰机器的。参考答案：B, C
题型：补全对话，情景问答 用适当的词填空，把对话补充完整。three, How much, on sale, Four yuan, welcomeA: 1_______________ are the pens? B: Sixteen yuan. A: That's expensive. Are the books 2_______________? B: Yes. A: How much is the book? B: 3_______________. A: I'll take 4_______________, please. Thank you. B: You're 5_______________. 查看答案
