有关酶催化反应的特点中错误的是()

A．酶反应在37%条件下最高

B．具有高度催化能力

C．具有高度稳定性

D．酶的催化作用是受调控的

E．具有高度专一性

根据语境或句意，用所给词的适当形式填空。

小题1:I don’t think students should be allowed to get their________ pierced (ear).

小题2:Fast food _______isn’t always bad for you, but too much of it is not good.(it)

小题3:Alex will go for a picnic instead of _______at home this weekend.(stay)

小题4:“Which do you like________, football, basketball or volleyball?” “Basketball.”(good)

小题5:My mother asks me________ milk every morning because it is good for me.(drink)