单选题：Biologist and engineer are interested in understanding natur

题目内容：

Biologist and engineer are interested in understanding natural silks because they are very light and brittle. A．Right
B．Wrong
C．Not mentioned

参考答案：

答案解析：

Tim Lyons liked to play computer games in his spare time.

Tim Lyons liked to play computer games in his spare time.A．Right B．Wrong C．Not m

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回答(63)题A．beats B．failures C．attacks D．shapes

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