基本信息
从A B C D 四个选项中,选出一个在句法功能上和逻辑意义上都相符合的可以填入空白处的最佳答案。
21 To succeed in a difficult task ,______________.
A) Persistence is needed B) Persistence is what you need
C ) One needs to be persistent D ) A persistent nature is needed
22 According to a new study by a British’s university , learning ______ second language can lead to ________ increase in your brain power.