This is s picture of Mr. Li’s family. The man in the middle is Mr. Li. The woman is Mrs. Li. They have two sons. The child behind Mr. Li is Li Lei. He’s thirteen. The other in front of Mrs. Li is Li Ming. He is eleven. Li Lei and Li Ming are in the same school, but not in the same grade. Li Lei is in Grade Two. Li Ming is in Grade One. They are good students. 根据短文内容，选择最佳答案。 小题1:There are______ people in the picture. A．three B．four C．five D．six 小题2:Li Lei and Li Ming______ in the same grade. A．is B．isn’t C．are D．aren’t 小题3:Mr. and Mrs. Li have______. A．one boy and one girl B．two children C．two girls D．one boy 小题4:Li Ming is______ brother. A．Mr. Li’s B．Mrs. Li’s C．Li Lei’s D．We don’t know. 小题5: How old are Li Lei and Li Ming? A．They’re eleven and thirteen. B．They’re eleven and twelve. C．They’re twelve and eleven. D．They’re thirteen and eleven.