6．WHO建议婴儿纯母乳喂养至少到(      )

A．3个月                                                     B．4个月

C．5个月                                                     D．6个月

7．婴儿应首先添加的辅食为(      )

A．蛋黄                                                        B．米粉

C．蔬菜泥                                                    D．肉泥

8．中国成年女性钙适宜摄入量为每人每天(      )

A．500mg                                                     B．800mg

C．1000mg                                                   D．1200mg

9．绿叶蔬菜中富含(      )

A．维生素A                                                 B．维生素B

C．β-胡萝卜素                                              D．维生素D

10．钙的最佳食物来源是(      )

A．蔬菜类                                                    B．鱼类

C．粮谷类                                                    D．奶及奶制品