单项选择题
A．a good place to land at by aeroplane B．a good place to fly over C．a good place to fly past D．a good place to live in
A．They help him make money. B．They give. him wood and other products. C．They help him prevent droughts and floods. D．They give him shad
A．feeling uncomfortably hot on the equator B．flying over the North Pole C．flying over the equator D．making homes on the equator