单项选择题 The slogan "scientific truth is a matter of social authority" has become dogma to many academic interest groups who have been______ themselves to substitute their authority for that of the, practicing scientists.

单项选择题 Meanwhile, the US and Israel regard Iran as a rogue state that seeds to export terror, build nuclear weapons and______the Middle East peace process.

单项选择题 At the outset, Nixon warned, too, that a great effort would be needed to meet the Communist challenge. But his audiences seemed______in such warnings, preferring to be reassured.