【简答题】John is more hard-working than his sister, ________ he failed in the exam.
【判断题】在钻床上工作时,如果钻头上缠有铁屑,在不停车的情况下,可以用刷子或铁钩清除长铁屑。
【单选题】Mr. John is one of those men who appears to be friendly, however, it is very hard to deal with him.(改错题)
【判断题】啮虫目、半翅目、双翅目及膜翅目的种类在储藏物中大多属于寄生或捕食其他害虫的天敌昆虫
【单选题】-Mum! math is too hard for me. -John, work hard, you'll find it easy. [ ]