题目: 离子型表面活性剂根据离子的种类,可分为阳离子、阴离子和两性表面活性剂。( ) 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0608/2a972dabf3ebc7a1962c56dadba4e45c.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 The other day,as she waited for the medical report from the doctor,her nervousness _________. [ ]A. has grown B.is growing C. grew D. had grown 查看答案
题型:选择题 The Chinese river dolphin is one of the First-Grade State Protection animals, a (an) mammal with its name – water panda.A.rareB.officialC.extremeD.universal 查看答案