单项选择题

In which point some sharks are similar with humans7

A．Bone structure.
B．Smell ability.
C．Birth mode.
D．Recover ability against disease.
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According to this passage, why the farming activities can affect the animals
A．By forcing them farming.
B．By affecting the quality of soils.
C．By adding chemicals and pollute the waterways.
D．By affecting the environments they live in.
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The demonstrators demanded ________.
A．for the release of jailed Solidarity leader Lech Walesa
B．to suspend the Solidarity Labour Union
C．to mark the anniversary of a workers revolt
D．for the punishment of those killers
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