精选优质文档-倾情为你奉上2018学年第二学期高二年级英语期末考试(LA4 Unit 6-7, NC4 Unit 7-8)II. Grammar and Vocabulary: 12%Directions: Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the one answer that best completes the sentence.17. China, a country with 145 million elderly people，will remain _ ageing society during this century, according to _ Chinese population experts.A. /;theB. an;/C. an;theD. the; /18. It is not rare in _ that people in_ fi
