皮皮学，免费搜题
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【单选题】
春联起源于( )A.
门神
B.
桃符
C.
D.
春贴纸
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】For questions 1-6, look at the terms about presentation techniques and introductory activities and the three possible examples listed A, B and C. Choose the example (A, B or C) which matches the term....
A.
The teacher starts the class by doing some revision before teaching some new language.
B.
The teacher chats to the class about what they did last weekend before playing them a song to listen to and then sing.
C.
The class describe pictures of capital cities before listening to a recording on visiting different cities.
【多选题】在局部麻醉药丁卡因的合成（酯交换反应）中，为了提高其收率，适宜采取的措施是（ ）。
A.
增大压力
B.
采取增加其中反应物B的配比。
C.
升高温度。
D.
从反应体系中不断地除去低沸点的某一产物。
【简答题】控制功能包括:单独控制、程序控制、 、远程组控、响应程序控制、时间表控制、设备禁止。
【简答题】Questions 28-30 Complete the summary on auditory learners using NO MORE THAN THREE WORDS for each gap. -- Students listen to a 【28】 ______ and draw what they hear or the teacher could describe a pictu...
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