【单选题】
Conversation one Why is the trip to Mars a one-way trip
A、The return trip is too expensive.
B.There is no technology to get people back.
C.People don’t want to return.
D.The return trip is too risky.
查看答案解析
参考答案:
正在加载...
答案解析
正在加载...
根据网考网移动考试中心的统计,该试题:
24%的考友选择了A选项
50%的考友选择了B选项
10%的考友选择了C选项
16%的考友选择了D选项