小丽原有7本童话书，妈妈又给她买了4本，小丽现在有几本童话书？0C8d9|5W5p-W/W*L
算式：提示:F.o0m(c1L-U0C8d9|5W5p-W/W*L
答：小丽现在有-l(w4F(m9P:`6\(y-`'r本童话书。0C8d9|5W5p-W/W*L