A:﹣ 52 i
B:−12i
C:﹣ 52
D:−12
利用组织培养无法做到的是( )
(____)He wants to play baseball.
(____)Tim was so happy because he got a gift.
(____)Why are you wearing a Tshirt?
(____)I am going to the cinema tomorrow.
(____)It's difficult to fly a kite.
下列可以用来治疗糖尿病患者的激素是( )