(2012·安徽) The limits of a person's intelligence, generally speaking, are fixed at birth, but __________ he reaches these limits will depend on his environment.
President Xi Jinping appeared at Saturday's state dinner hosted by the Dutch royal family in a traditional Chinese suit ,which displayed the leader's national pride and confidence in Chinese culture.
A capableB. significant
C. formalD. authentic
The study of natural history is not something to be left to biologists. In fact, their capacity __________ the time they can spend away from their offices is very limited.