【单选题】There are _______ bikes in our schoo. [ ]
【单选题】Tom always comes late____ schoo
【单选题】Helen works at ( ) schoo l.( ) school is very big.
【判断题】在FX2n系列PLC编程时,状态转移图中的状态元件S一定要按编号顺序选用,且不能重复。( )
【简答题】A teacher once told each of her students to bring a clean plastic bag and a bag of potatoes to schoo1.For every person they didn’t want to forgive in their lives,they were told to choose a potato,writ...