题目内容：

根据所给首字母和英文解释，用适当单词的正确形式填空。

1.He __________ towards me and whispered in my ear. (弯腰)

2.Our problems __________ since last year. (倍增)

3.The discovery is creating a buzz throughout the __________ science. (天文学)

4.The task requires a good c__________ of complex instructions. (the ability to understand something)

5.I don’t think you’ve quite g__________ the seriousness of the situation. (to completely understand)