The ozone layer plays as great a role in the stability of spaceship Earth as ______ the waters of its lakes, ponds, oceans, rivers, and streams.

单项选择题Perhaps I should not have done so, but I changed my mind about the new job even though I was ______ last week.

单项选择题In proposing (such philanthropic donations), the director of the company certainly spoke (from) a-genuine concern (for the needy) and not (any desire) for personal accolades.