吃剩菜剩饭时要注意什么？
参考答案：饭菜要烧熟煮透再吃。吃冰箱里的剩饭菜，应重新彻底加热再吃。碗筷等餐具应经常煮沸消毒。
—How do you spend your weekends?
—At weekends I prefer _______ at home to _______ out.
A．staying, going
B．stay, going
C．staying, to
D．to stay, go
超过规定条件下预计的误差或明显是歪曲测量结果的误差称（）。
