Penicillin acts both \_.
Akilling bacteria and their growth being inhibited
Band to kill bacteria and to inhibit their growth
Ckills bacteria and inhibits their growth
Dby killing bacteria and by inhibiting their growth正確答案
答案與詳解
使用「by killing」與「by inhibiting」兩個「介系詞+動名詞」結構,完全符合平行對稱原則,且語意通順。
