单项选择题

（）

A．They can’t fit into the machine.
B．They have not been delivered yet.
C．They were sent to the wrong address.
D．They were found to be of the wrong type.

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单项选择题

Why did Vernon Bowman get sued（）

A．He used genetically modified seeds to feed his cattle.
B．He planted soybeans without paying for the patent.
C．He made a profit out of Monsanto’s commercial secrets.
D．He obtained Monsanto’s patented seeds by illegal means.

单项选择题

Why does the author call the learning process a paradox（）

A．Pains do not necessarily lead to gains.
B．What is learned is rarely applicable in life.
C．Failure more often than not breeds success.
D．The more is taught, the less is learnt.