—Your spoken English is much better now.

—Thank you. Our English teacher often asks me_______English as_______as I can.

A．to speak, many

B．not to speak, many

C．to speak, much

D．not to speak, much

肠阿米巴病血清学检查包括（）

A.DNA探针杂交技术

B.单克隆抗体试验

C.酶联免疫吸附试验

D.间接荧光抗体试验

E.间接血凝试验