题目内容
Within family relationships the first four minutes are also important after a long period of being apart.
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When you meet a person for the first time, it doesn’t matter if you begin to complain about your health.
Most people give their complete attention to persons they have just met.
With practice people can learn to change their social habits.
注射模的排气方式有（ ）和（ ）。排气槽通常开设在型腔（ ）部位。最好开在（ ）上，并在（ ）一侧，这样即使在排气槽内产生飞边，也容易随塑件脱出。
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