单项选择题

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多项选择题

下列单词包含爆破音的有哪些？
A、bar
B、dog
C、pick
D、tit

单项选择题

For theregion-based protection & restoration policies, the upper regionof the Yellow River should __________. ()

A．focus on improving the water-source functions and expanding the scope of ecological protection and restoration of landscapes, forests, lakes and grasses in water-source regions such as the three river sources.
B．focus on improving the beach area, building ecological corridors
C．focus on controlling water and soil erosion
D．prioritisation of ecological flow protection