Science and technology have ___A_____ in important ways to the improvement oA) attachedB) assistedC) contributedD) witnessed为什么不能选A?

Since we enter the 21st century,the spirit of cooperation has becoming more and more important.Win-win is a popular word.In this way,add one big to two,and not only equal two.In this highly developed society,the progress of every science and technolo 英语翻译After Dolly(多利羊)was born,cloning could no longer be dismissed as science fiction.The ability to create an identical twin of a lamb is but one step short of cloning humans,which many find terrifying and offensive.However the technolo Materials Science and Engineering DESIGN AND SCIENCE怎么样 art and science SCIENCE AND HYPOTHESIS怎么样 graduate and undergreduate science A：___________B：Science and Chinese computer science and engineering是什么意思 science technology and society是什么? material science and engineering A material science and engineering A optical information science and technology science? Science science science Shanghai science and technology museum怎么读