生命科学的发展离不开技术水平的提高和一代又一代科学家的前赴后继的探索．有关科学家以及他们做出的成果的叙述中，不正确的是（    ）

 关于一次函数y=﹣x+1的图象，下列所画正确的是（　　）

经济心理学认为，人们只为自己喜欢的人买单。透视“姚明现象”，2.26米的身高、幽默的谈吐、良好的潜质、中国国际化的形象成为姚明的比较优势。正是抓住这种心理，NBA把姚明变成了一个巨大的“广告牌”。人们为体育明星买单体现了(　　)

①从众心理引发的消费　　　 ②求异心理引发的消费

③生存资料消费　　　　     ④享受资料消费

若函数f（x）对定义域内的任意x₁，x₂，当f（x₁）=f（x₂）时，总有x₁=x₂，则称函数f（x）为单纯函数，例如函数f（x）=x是单纯函数，但函数f（x）=x²不是单纯函数．若函数 $f\left(x\right)=\{\begin{array}{c}{2}^x，x\le 0\\ -x^2+m，x>0\end{array}$ 为单纯函数，则实数m的取值范围是____．

阅读理解，根据材料内容选择最佳答案。
    The Macintosh family is in England. Mr. Macintosh is a farmer(农场主). He has three people help him on the farm. They help him look after the animals(照顾动物). Mrs. Macintosh is a teacher. She teaches math. She can play the piano and the guitar. Mr. and Mrs. Macintosh have one son and one daughter. Their son's name is Tom and their daughter's name is Fiona. Tom and Fiona like music very much. Tom can play the guitar and his sister, Fiona, can play the piano. Tom and Fiona go to the school music club every Wednesday. Next month they will play for all the teachers and students in their school. Mrs. Macintosh is very happy for them. Mr. Macintosh can't play the guitar or the piano but he can sing. Sometimes, the family plays and sings together(在一起) after dinner in the evening. That's Mr. Macintosh's favorite family activity(活动).