A pilot would be most （）, if, on hearing of imminent bad weather, he sent forth a distress signal at a time too（）to ascertain the reality of the danger.

Transgenic mammals that secrete monoclonals in their mi...

单项选择题Transgenic mammals that secrete monoclonals in their milk can generate one gram of antibody for roughly $100—one third the price of traditional production methods, most scientists agree, but still too expensive to be （）

Roger's understanding of the pointillist technique is p...

单项选择题Roger's understanding of the pointillist technique is profound, albeit thoroughly（）; there are few who can （） his talent, recognized often and justly, for understatement and economy in the use of color.

PROBITY:（） A．prudence B．tension C．unscrupulousness D．se...

单项选择题PROBITY:（）