题目内容
2、(2011·河北正定中学第一次月考)15.They experimented _____the new medicine _____animals.
A.on; to B by ; on C.with ; on D with; to
试题答案
2、C考查介词的用法。句意:他们用机器在动物身上做实验。
(2011·河北正定中学第一次月考)15.They experimented _____the new medicine _____animals.