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有理分式函数在其定义域的每一点都是的.

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The Qingming Festival is also known as an occasion for _ and _ in China.

A. kite flying
B. playing football
C. playing on the swing
D. throwing water

The Hanshi Day is also in memory of ________who lived in the Spring and Autumn period.

The Qingming Festival （or Clear and Bright Day） is a day for ________the dead.

The Hanshi Day （or Cold Food Day,寒食节） is the day after the Qingming Festival, when no fire or smoke is allowed and people only eat cold food.

A. 对
B. 错