They’ve made full preparations, but it remains ______whether they will be able to do a good job in the experiment.

A．to see

B．seen

C．being seen

D．to be seen

酸性磷酸酶（ACP）及其同工酶测定主要用于诊断（）

A.肝癌

B.胃癌

C.前列腺癌

D.脑癌

E.肾癌