Naturalists say that (there is evidence) to support the assertion (which) anthropoids, (whether in) (captivity) or in the native state, sometimes beat their breasts.

单项选择题Perhaps the most important quality (shared) by all notable scientists is a strong determination (to solve) a problem, when it (arises) or to seek an explanation for a (phenomena).

单项选择题It can be inferred from the passage that major universities are trying to tighten their grading standards because they believe ______.