Have you prepared for the sports meeting which _____ soon?

A．has taken place

B．will be taken place

C．is to take place

D．is to be taken place

合成甲状腺激素所需要的酶包括（）

A.钠碘转运体

B.过氧化物酶

C.偶联酶

D.脱碘酶

E.甲状腺球蛋白合成酶