Some young men started smoking without realizing what the _____ were.
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The box was very heavy, but Tom still ________ to carry it home.
P25 5,6题When I make a mistake in English learning, I usually ____________________ and my face turns red.
It is not that helpful in learning English to ____________ only.
红外ATR测试纤维使用到的实验仪器、设备（）
A. 傅里叶变换红外光谱仪
B. ATR附件
C. 红外烤灯及研钵
D. 压片模具及配套小工具
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