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【简答题】
请补充main函数，亥函数的功能是求方程ax2+bx+ e=0的两个实数根。方程的系数a、b、C从键盘输入，如果判别式(disc=b*b-4*a*c)小于0，则要求重新输入a、b、c的值。 例如，当a=1，b=2，c=1时，方程的两个根分别是：x1 =-1．00，x2=-1．00。 注意：部分源程序给出如下。 请勿改动函数中的其他任何内容，仅在横线上填入所编写的若干表达式或语旬。 试题程序： include
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【简答题】听力原文：What does the passage talk about? What does the passage talk about? It talks about the changes in ______.
【单选题】This sort of punishment is applied only to nonviolent criminals who are not______to be dangerous to the public.
A.
possible
B.
probable
C.
likely
D.
like
【简答题】A．talk B．to talk C．talk about D．to talk about
【单选题】What do they talk about?
A.
They talk about a magazine.
B.
They talk about food.
C.
They talk about the beach.
【单选题】The purpose of this passage is______.
A.
to talk about Valentine's Day
B.
to talk about the story of Valentine
C.
to talk about people's celebration on Valentine's Day
D.
to talk about the popularity of celebrating Valentine's Day now in the world
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