已知复数  z=(1-i)(1+2i)，其中 i 为虚数单位，则 $\stackrel{-}{z}$ 的实部为（  ）

已知函数$f\left(x\right)=\left\{\begin{array}{c}\frac{2}{x},x\ge 2\\ x^2-3,x<2\end{array}\right.$若关于x的方程$f\left(x\right)=k$有三个不等的实根，则实数k的取值范围是（    ）

    Today I'd like to tell you something about two Chinese festivals.

    The first one is the Mid-Autumn Festival. It is a time for the 1. At night, the whole (全部的) family 2  delicious moon cakes (月饼), and the parents 3 the story of Chang'e. It's a traditional 4 story.

    The second (第二的) one is the Lantern Festival. 5  that day, we eat yuanxiao —a kind of rice dumpling. It's really 6 and I love it very much. We make many kinds of lanterns 7  for the festival. You can see a lot of pictures on 8 some are funny 9 The tiger is my favourite. Well, it likes eating much meat. But I don't want to 10 from it. I want to be healthy.