单项选择题

（）scientists have observed increased pollution in the water supply.

A．Late
B．Later
C．Latter
D．Lately

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单项选择题
Most great artists are exceptionally （）people.

A．sensitized
B．sensitive
C．senseless
D．sensory
单项选择题
This watch is （） to all the other watches on the market.

A．superior
B．advantageous
C．super
D．beneficial
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