甲看乙的方向是北偏东30°，那么乙看甲的方向是（　　）

商鞅变法的措施中最能体现出当时经济发展的需求的是奖励军功。

错误：____。

订正：____。

$\frac{8}{100}$米可以写成（  ）$$

阅读短文，选出合适的选项。

    Hello! My name is Sun Wei. Here is an American boy. His name is David Smith. He is twelve. And I am twelve, too. David is in Class Three, Grade One. I am in Class Three, Grade One, too. He is Number Eight, Row Five. I am Number Five, Row Four.