代数式(﹣4a)2的值是( )
A:16a
B:4a2
C:﹣4a2
D:16a2
— What do you think of Kangkang?
— He is _______ excellent student that we all like him.
①胰岛素 ②乳糖 ③核苷酸 ④磷脂 ⑤脂肪 ⑥RNA ⑦抗体 ⑧性激素 ⑨纤维素.