— Will Peter come with us tonight — He ____ come ,but he isn’t very sure yet.
A. must
B. can
C. may
D. will
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梨适宜在（）温度下贮藏
A. 0-1℃
B. 10-15℃
C. 20-25℃
D. 25-30℃
在普通焊接5部法的焊盘预热步骤中,包含的操作有
A. 烙铁头清洁干净并上锡
B. 烙铁头给焊盘和管脚同时预热5秒
C. 烙铁头必须同时碰到焊盘和管脚
D. 烙铁头与焊盘成40±5度角
Peter________come with us tonight, but he isn’t very sure yet.mustB．myC．cnD．Will217. Peter________come with us tonight, but he isn’t very sure yet.must B．my C．cn D．Will
A. must
B. may
C. can
D. Will
discharge“发射”和chariot“四轮马车”的词根是（）
A. char
B. car
C. ar
D. har
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