Manatees usually ______ about 1000 pounds weight.Manatees usually ______ about 1000 pounds weight.A.weight B.weigh C.in weight D.weight to 请问为什么?

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Manatees usually ______ about 1000 pounds weight.
Manatees usually ______ about 1000 pounds weight.
A.weight B.weigh C.in weight D.weight to
请问为什么?

b ,对,weigh 是动词,意思是;有,重量

因为海牛通常重量为1000磅,weight表重量,是动词。动词修饰usually。而B C是名词 D的to与about同为介词,不能放在一起。