外用杀虫止痒，内服壮阳通便的药物是( )
A．砒石B．轻粉C．硫黄D．升药
参考答案：C
避免机动车爆胎的正确做法是降低轮胎气压。
找出下列句子中错误的一项，将其序号填入前面括号里。
( ) 1. We go to a restaurant last Monday.
A B C D
( ) 2. We'll visited our grandparents tomorrow.
( ) 3. We took many picture on our holiday.
( ) 4. Yesterday I'll be back home!
