问题
填空题
α-酸和β-酸容易氧化转变成（）和（）。
答案
参考答案：软树脂；硬树脂
搜题请搜索小程序“爱下问搜题”
α-酸和β-酸容易氧化转变成（）和（）。
参考答案：软树脂；硬树脂
CONVERSATION 2 (Questions 5-8)
| Booking Theatre Tickets |
| The speaker is a driving instuctor over (5) \r\n (6) instructor. Learning, from a private instructor is (7) than going to a big school. But at the moment the speaker is fully booked and his prices are quite (8) |