根据句子意思和首字母，写出恰当的单词。
1.It's 12:00. I am very h____. I am going to eat a lot.
2.Be q____ . We can't talk in the library.
3.We should arrive at school on time. Don't be l____ for school.
4.The boys are very young but they are very c____ .

5.I am short but my brother is very t____.

如图，二次函数y=ax²+bx+c的图象交x轴于A、B两点，下列结论：

①abc＞0；②2a+b=0；③当m≠1时，a+b＞am²+bm；④a﹣b+c＞0；⑤若ax₁²+bx₁=ax₂²+bx₂，且x₁≠x₂，则x₁+x₂=2；⑥OA•OB=$\frac{c}{a}$；

其中正确的有（　　）

“精忠报国”激励了无数的中华儿女，与此相关的历史人物抗击的是（  ）的南下中原

精子和卵细胞的结合场所是在（    ）