My mother asked me to show my homework to her.

My mother said to me “Show      homework. ”

A．her my

B．me your

C．her your

D．me his

磺胺类药物的作用机制

A．抑制二氢叶酸合成酶
B．抑制二氢叶酸还原酶
C．抑制DNA回旋酶
D．抑制四氢叶酸还原酶
E．抑制四氢叶酸合成酶