皮皮学，免费搜题
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【单选题】
铸造时的主要作用是 。A.
增加局部冷却速度
B.
提高流动性
C.
补偿热态金属，排气及集渣
D.
补缩
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
【简答题】What do your photos say about you to possible employers ?
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【单选题】What should you do before your practice in a second language?
A.
Take photos of you presenting.
B.
Record yourself presenting.
C.
Read through your presentation.
D.
Read aloud to your foreign friends.
【简答题】Think about the following questions. And record your answers. 1. Do you like to take photos? 2. Are you a good photographer? 3. What do you think students learn at a photo camp?
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