单项选择题

New research methods are being brought to ______the subject.

A．bear on
B．pick up
C．take apart
D．bring on
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单项选择题
Airborne germs are ______ yet surprisingly few are virulent; despite the fact we inhale them with nearly every breath, the vast majorities of them are innocuous and are neutralized easily by our immune system.
A．ubiquitous
B．intolerable
C．omnipresent
D．plentiful
单项选择题
The attempt and offer to carry out cloning experiment on human being is blameworthy and can hardly find any ______among the public not only in our country but also in most of the countries in the world.
A．conscience
B．consensus
C．sensation
D．discord
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