Science fiction is often about things we believe may be poss

Science fiction is often about things we believe may be possible in the future.请教此句是否正确?
该句为高二教材（下）第10页“Speaking”指令部分部分第一句。另外，06年湖北高考卷短改也有类似一句：Her srength made me stronger and gave to me courage to try things others thought were impossible.因而应该是正确的。