高等继续教育 / 电子商务英语
正确率:100%
题型描述: 单选题
______ _ under a microscope, a fresh snowflake has a delicate six-pointed shape.
A.Seen
B.Sees
C.To see
D.Seeing
______ _ under a microscope, a fresh snowflake has a delicate six-pointed shape.
A.Seen
B.Sees
C.To see
D.Seeing
参考答案: