1.【完成句子】Most of us can find 15 minutes or half an hour each day for some regular activity. For example,one famous surgeon always spent 15 minutes reading something before he went to sleep each day. Whether he went to bed at 10 p.m. or 2：30 a.m. made no difference.
You are advised to read something before you __________.
A.find the topic sentences
B.find out the new words
C.keep reading fast
D.go to bed every day
答案解析：本段提到一位著名的医生不管晚上睡得多晚，都要花15分钟读点东西，那已经成为习惯。所以本题说“在你干什么之前，建议你读点东西”，从选项中看只有 D 项合适。
1.【完成句子】The importance of particular metals in the human diet has been realized within the past few decades,and the idea that geology might be related to health has been recognized for a number of elements such as iodine,zinc and selenium. For example,soils with low iodine contents produce crops,and animals deficient in iodine. A lack of iodine in the human diet leads to some serious diseases.
Some serious diseases is connected with deficiency of __________.
A.industrially polluted soils
B.the element of iodine
C.rock and soil chemistry
D.the persistence of heavy metals
答案解析：通过关键词Some serious diseases，可将题目定位于最后一句话：A lack of iodine in the human diet leads to some serious diseases. deficiency of和lack of表达同样的意思“缺乏、缺少”，因此根据这句话可以判断答案为B。