题目内容
I am so grateful to my parents’ generous support that I can complete college debt-free and live on my own right after graduation.
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Teachers need to strike a balance between instructing their students and letting them discover things for themselves.
He couldn’t why his son quit his well-paid job and started his own business.
There are employment opportunities with private enterprises, state and local governments as well as organizations such as the Red Cross.
利用平面任意力系平衡方程，最多能求解（ ）个未知量。
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