The research scientists often meet with problems( )a new typ

The research scientists often meet with problems( )a new typ The research scientists often meet with problems requireing With a lot of difficult problems ________ ,the new headmaste My friend and I often meet in the new park _ with each other 英语高中单选The scientists say that new research makes ____possibl 一道介词选择2 ___ research ___ the universe scientists have put a ___ research ___ the universe scientists have put a lot of i When I meet with difficulties ,the teacher often encourages 关于meet with problems的问题 A celebration was held for the scientists with great______.( 英语翻译The scientists worked with a unique collection of health Scientists are doing research on the way, how children learn