单项选择题

You must not think that experts are ________ right.

A．steadily
B．invariably
C．continuously
D．constantly
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单项选择题
It is difficult to ________ the sample that is on the slide unless the microscope is adjusted properly.
A．overlook
B．discern
C．disclaim
D．distract
单项选择题
There is no reason they should limit how much vitamin you take, ________ they can limit how much water you drink.
A．much more than
B．no more than
C．no less than
D．any more than
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