医学博士英语统一考试之后，即将迎来各院校的考博英语初试，英语考试的备考，参考历年真题是一个很重要的备考过程，今天新东方在线小编给大家整理了北京大学2016年考博英语真题，帮助大家更好的备考，考博英语考试，一起来看看吧!
16. The flashing red light served as a of danger ahead.
A. predictor B. caution C. precaution D. prevention
17. According to the weather forecast, which is usually , it will snow this afternoon.
A. accurate B. dull C. awkward D. tedious
18. If his father could not keep up the payments on the mortgage, his uncle might it for him.
A. redeem B. amend C. resemble D. appeal
19. They made detailed investigations to themselves with the needs of the rural market.
A. adhere B. acknowledge C. acquaint D. activate
20. Radar is used to extend the of man’s senses for observing his environment, especially the sense of vision.
A. validity B. liability C. capacity D. intensity