皮皮学，免费搜题
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【多选题】
按化学结构分类合成镇痛药包括A.
哌啶类
B.
氨基酮类
C.
苯基酰胺类
D.
吗啡喃类
E.
苯吗喃类
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】听第一段对话，回答第1小题。 1. What did the woman do last night? A. She went to a party. B. She went to school. C. She went to work.
【简答题】听1段对话，回答1-2小题。 1. What did the woman do last night? [ ] A. She went to the cinema. B. She went to a restaurant C. She watched TV at home. 2. What did the man do last night? [ ] A. He stayed at...
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【单选题】Last night she went shopping and bought_____.
A.
a pair of shoe
B.
a pair of shoe s
C.
a piece of shoes
【单选题】Last night she went shopping and bought at the market.
A.
a piece of trouser
B.
a pair of trouser
C.
a piece of trousers
D.
a pair of trousers
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