下列各组离子在指定溶液中能大量共存的是（　　）

①pH=11的溶液中：CO₃^2-、Na⁺、AlO₂^-、NO₃^-

②无色溶液中：K⁺、Na⁺、MnO₄^-、SO₄^2-

③加入Al能放出H₂的溶液中：Cl^-、HCO₃^-、SO₄^2-、NH₄⁺

④含有Fe²⁺的溶液中：[Fe（CN）₆]^3-、NO₃^-、Cl^-

⑤由水电离出的c（OH^-）=1×10^-13mol•L^-1的溶液中：Na⁺、Ba²⁺、Cl^-、Br^-．

A．①⑤

B．②③

C．②④

D．③⑤

Thanks to the immediate rescue, the two boys who had fallen into the river _____ climb onto the bank. [ ]

A. were able to

B. could

C. would

D. should