单项选择题

The passage suggests that______

A．it was due to Jim that George was found guilty
B．Jim did not do exactly what George asked him to do
C．Jim asked his colleagues to recommend mercy
D．Jim persuaded the jury to lighten George's punishment

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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

单项选择题

According to the author, in factory, vegetable food______.

A．is easy for chickens to digest
B．is insufficient for the needs of poultry
C．is fully utilized in meat and egg production
D．is inefficiently converted into meat and eggs