Question

2,        the moon is too  dry to have life. (it) 似乎月球上太干燥而不可能有生命。

Answer 1

2. It appears as if考查as if / as though的用法。it appears as if / as though-从句表"似乎"或"看上去"之意，通常用来表推测。若所推测的事情有可能是真实的，从句中用陈述语气；否则，从句中用虚拟语气。类似于appear这种用法的词还有seem和look。