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单项选择题

A．Only one.
B．Two.
C．Three.
D．More than three.
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单项选择题A．Jealous.B．Indignant.C．Negative.D．Proud.

A．Jealous.
B．Indignant.
C．Negative.
D．Proud.

单项选择题In this passage the author argues that ______.

A．efficiency must be raised in the poultry industry
B．raising poultry can provide more protein than growing grain
C．factory farming will do more harm than good to developing countries
D．hungry nations may benefit from the development of the poultry industry