Many scientists have believed that there may be a _________of life on the Mar． A．mark B．signal C．sig...
2022-12-23 02:09:36 146次 2013届辽宁省高三上学期期中考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Many scientists have believed that there
may be a _________of life on the Mar．
|
A．mark
|
B．signal
|
C．sigh
|
D．sign
|
本题链接：
