如图，已知函数y=ax+b和y=kx的图象交于点P，则根据图象可得，关于x、y的二元一次方程组 $\left\{\begin{array}{c}y=ax+b\\ y=kx\end{array}\right.$的解是（　　）

 

关于埃及叙述正确的是（  ）

若x=1满足不等式ax²+2x+1＜0，则实数a的取值范围是（　　）

完形填空。
    Hello. I'm Jenny. I have a best friend.   1 name is Amy. We are in the same school. We both can sing and dance well. She is as  2 as me.
    At school, my teachers all can make 3   happy. But we must4  white blouse with the long sleeves. I am good 5   maths and English. She 6  English. She thinks it's difficult. Yesterday we7   a party at school. We enjoyed ourselves.
    At spare time, my favourite8   is winter. I like 9  snowmen in winter. But she likes eating ice creams in summer. What a pity!
    In two months' time, we are going to go to middle school. We are very busy every day. We  10   harder than now.

某钙片的标签如图，且知钙片成分中只有碳酸钙中含有钙元素：