对下面文段中划线词的解释有错误的一项是   (           )
策之不以其道，食之不能尽其材，鸣之而不能通其意，执策而临之，曰“天下无马！”呜呼！其真五马邪？其真不知马也。

根尖结构中，根吸收水分和无机盐的主要部位是（   ）

$\frac{5}{8}$ ____ $\frac{5}{9}$

$\frac{9}{19}$ ____ $\frac{10}{19}$

1____ $\frac{8}{9}$

2 $\frac{4}{5}$ ____2.8．

根据短文理解，选择正确答案填空。 

    Jim is a junior high school student. He gets up 16:30 every morning. His home is near his school. He 2home after breakfast. He goes to school on foot. This is good for his 3. He has four lessons in the morning. He has lunch at home. After lunch he goes to school again. In the afternoon, Jim has lessons . He likes English and PE lessons. He has PE lessons on Tuesday and Friday. He is good at4football and basketball. He is also good at the high jump. His PE teacher likes5 very much. He often plays football with his classmates after school.

下列有关“三国鼎立”的资料，其中最接近第一手资料的是（    ）