题目：
我国已经批准立项（）任务，计划在2020年（）的最佳窗口时间发射，实现对其的环绕和着陆巡视探测。此外，我国重型运载火箭关键技术攻关和方案深化论证阶段的立项也已批复。
A.金星探测
B.木星探测
C.火星探测
D.土星探测
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C
我国已经批准立项（）任务，计划在2020年（）的最佳窗口时间发射，实现对其的环绕和着
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