在科技部大力指导与支持下，江苏省认真落实国家创新部署，深入实施创新驱动发展战略，全面加快科技改革和创新发展，创新型省份建设跃上新台阶。进一步增强我省的科技创新能力（    ）

①必须坚定地实施科教兴国和人才强国战略             ②是我国民族振兴和社会进步的基石

③必须坚持把科技摆在优先发展的战略地位             ④青少年学生应自觉培养创新的精神

①加入Al能放出大量H₂的溶液中：Na⁺、K⁺、NO₃^﹣、Cl^﹣、SO₄^2﹣

②在pH=11的溶液中：Na⁺、AlO₂^﹣、NO₃^﹣、S^2﹣、SO₃^2﹣

③由水电离的c（H⁺）=10^﹣12mol•L^﹣1的溶液中：Cl^﹣、HCO₃^﹣、NO₃^﹣、NH₄⁺、F^﹣

④加入Mg能放出H₂的溶液中：Mg²⁺、NH₄⁺、Cl^﹣、K⁺、SO₄^2﹣．

阅读短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

    Basketball stars become hip-hop singers． It's true． In NBA, hip—hop music is very popular． Many of the players, like Shaquille O'Neal of the Los Angeles Lakers, write rap (说唱) words when they travel on planes from one city to another． Some of them even have rap radio shows and others perform (表演) in music video．

    When some of the younger stars play basketball, they even try to look like hip—hop singers．

    "Hip—hop is just part of their culture," says one player． "All of us grew up listening to rap and playing basketball, and rappers grew up doing the same thing．"

    Master P． is a famous rap star who wants to become a basketball player． Two NBA teams have invited him to join them． They enjoy listening to his music． An NBA player has become a rapper． He has made four successful rap albums (专集)．

    NBA has a closer connection to hip—hop than any other sports league．