单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．The library no longer had the book on reserve.
B．The homework assignment wasn’t clear.
C．The professor had chosen a mystery book for him instead.
D．The library closed earlier than he’d expected.
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单项选择题
A．It indicates that latecomers don’t care about others’ time.B．It indicates that latecomers always ignore other people’s feeling.C．It indicates that latecomers enjoy being looked at by others.D．It indicates that lateness is their way of life.
A．It indicates that latecomers don’t care about others’ time.
B．It indicates that latecomers always ignore other people’s feeling.
C．It indicates that latecomers enjoy being looked at by others.
D．It indicates that lateness is their way of life.
单项选择题
A．It is to determine which food chain is the most efficientB．It is to describe the food network among plants and animals.C．It is to explain the process of photosynthesis (光合作用) in green plants.D．It is to appeal to conservationists to protect endangered plant species.
A．It is to determine which food chain is the most efficient
B．It is to describe the food network among plants and animals.
C．It is to explain the process of photosynthesis (光合作用) in green plants.
D．It is to appeal to conservationists to protect endangered plant species.
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