皮皮学，免费搜题
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【多选题】
影响羰氨反应的因素包括A.
反应物种类
B.
反应物浓度
C.
金属离子
D.
PH
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】He got up early to catch the first bus.
A.
He got up early
B.
to catch the first bus
C.
got up
【简答题】He got up _____________(早) than I did this morning.
【单选题】He got up, stumbling blind with sleep,.... (Para. 13)
A.
When he got up, he stumbled because he became blind and sleepy.
B.
When he got up, it was still very dark and he was still very sleepy. He could hardly open his eyes and could not see or think clearly, so he walked or moved unsteadily and blindly.
C.
When he got up, he moved unsteadily because he became blind and sleepy.
【简答题】使用形状工具绘制的图形，边缘会有一圈明显的“细线”，这些线段被称为。
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