题目

下列四组生物中，都属于真核生物的是（    ）。 A.噬菌体和根霉     B.细菌和草履虫     C.蓝藻和酵母菌     D.衣藻和变形虫  答案：DSo difficult ________ it to live in an English-speaking country that I was determined to learn English well．A．I have feltB．have I feltC．I did feelD．did I feel