【单选题】We won't go to the Great Wall if it ___________ the day after tomorrow. [ ]
【单选题】We _________ for a picnic if it _________ rain this Sunday.
【单选题】We hope to go to the beach tomorrow, but we won’t go ____ it’s raining.
【单选题】在萃取过程中,所用的溶剂称为 ( ) 。
【单选题】在萃取过程中 , 所用的溶剂称为 ( ) 。
【单选题】We don't know if it _______ this weekend. If it _________, we will go on a trip.
D.
will rain; doesn’t rain
【单选题】飞溅润滑方式主要是利用飞溅起来的( )来润滑零件表面。