皮皮学，免费搜题
登录
搜题
【判断题】
实验中用到的有毒试剂应用大量自来水冲洗稀释后排放。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：M: After two weeks of tennis practice lessons, I think I have finally managed to improve my backhand. W: Like my mum always says, 'Practice makes perfect.' Q: What does the woman mean? (14)
A.
Her backhand is almost perfect.
B.
The time the man spent practicing has helped him.
C.
The man's mother wanted him to .practice.
D.
Her mother is a good tennis coach.
【简答题】在规范团号的书写中,我们要运用到交通等级的代码,铁路硬座用字母( ) 表示。