Although Zhong Nanshan knows the new virus is more____ to old people， he cares little for his own safety．（ ）
A．politeB．dangerousC．friendlyD．important
Although Zhong Nanshan knows the new virus is more____ to old people， he cares little for his own safety．（ ）
A．politeB．dangerousC．friendlyD．important
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