题目内容
听下面一段材料,回答第1-3题。
1. At what temperature should we start the freezing process?
A. Just below 0℃.
B. Between -15℃ and -20℃.
C. As low as possible.
B. Between -15℃ and -20℃.
C. As low as possible.
2. How long can most foods be stored frozen?
A. For up to one year.
B. For half a year.
C. For 24 hours.
B. For half a year.
C. For 24 hours.
3. What shall we learn next week?
A. About canning food.
B. About removing water.
C. About how to unfreeze food.
B. About removing water.
C. About how to unfreeze food.
1-3: BAA
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