【单选题】This is _____ English class. I hope you can enjoy English. [ ]
【简答题】I like English class very much.English is my ______ class.
【单选题】无土栽培由于不用自然土壤,作物完全生长在营养液中或用( )固定植株而浇灌营养液,所以又称水培。
【单选题】I even dropped my father’s cup ______ I was cooking!
【单选题】无土栽培不用自然土壤,作物完全生长在营养液中或用( )固定植株而浇灌营养液。
【判断题】若被测金属离子与EDTA配位反应速度慢,则一般可采用置换滴定方式测定。
【单选题】I dropped my key in the garden, but luckily my mother ________it.
【单选题】I by my teacher’s home when I was back home last night.