单项选择题 Most of us go through life adding （） to knowledge, polishing a concept here or there, doing an experiment, contributing a few leaves or, if we are lucky, a twig to the tree of knowledge.

The charitable aces of their boss used to be greatly pr...

单项选择题The charitable aces of their boss used to be greatly praised by the people. However, ruthless company-downsizing drives and continued layoffs, coupled with rising pay for top managers, have made him look a good deal less （）.

For us it is a big and dark secret; to （） it would be t...

单项选择题For us it is a big and dark secret; to （） it would be to jeopardize our future,‖ confessed an aviaphobe who is currently undergoing therapy.

She often remains coldly remote from him; probably his ...

单项选择题She often remains coldly remote from him; probably his badly scarred face produced an involuntary feeling of （） in his neighbor.