题目内容
12．I often do my homework _________ the evening．But I watch TV ________ Saturday evening．（ ）| A． | in； on | B． | in； at | C． | on； at | D． | on； at |
分析 我经常在晚上做作业．但是我在周六晚上看电视．
解答 答案：A．考查介词．句意"我经常在晚上做作业．但是我在周六晚上看电视．"．第一个空，在早上，下午，晚上用in the…第二个空，表示具体某一天的上午，下午或晚上，用介词on．答案是A．
点评 考查介词用法，这个知识点很广泛，有一些固定用法，需要日常积累，结合语境选择正确介词完成习题．
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2．Feeling lonely can make you sick．Doctors have long known that loneliness can cause many health problems and even death．What they didn't know is （16）C this feeling causes illness．A study in the online magazine Genome Biology （17）A that loneliness actually influences the important part of our bodies-our genes．
In a small population of patients，researchers （18）D more than 20，000genes to compare how the genes of lonely and non-lonely individuals （个体） express themselves in molecular processes （分子过程） and in personal health．They found that gene expression is （19）B in chronically （长期地） lonely people．"We now have a new way for understanding the relationship （20）B social experience and physical health，"explains the study's lead author，Steve Cole of University of California，Los Angeles．
"This study-the first to link （联系） （21）D with gene changes-is special and exciting，"says Emma Adam，a professor of human development at Northwestern University．"It （22）A in the black box．"
According to John Cacioppo，an author of the study from the University of Chicago，the
work suggests that loneliness is a warning （23）B，much like physical pain．"This feeling is so bad because （24）D of us wants to be forgotten； that's also what human means，"he says．"It makes us（25）C for other people and want to be with friends when we're lonely．"
In a small population of patients，researchers （18）D more than 20，000genes to compare how the genes of lonely and non-lonely individuals （个体） express themselves in molecular processes （分子过程） and in personal health．They found that gene expression is （19）B in chronically （长期地） lonely people．"We now have a new way for understanding the relationship （20）B social experience and physical health，"explains the study's lead author，Steve Cole of University of California，Los Angeles．
"This study-the first to link （联系） （21）D with gene changes-is special and exciting，"says Emma Adam，a professor of human development at Northwestern University．"It （22）A in the black box．"
According to John Cacioppo，an author of the study from the University of Chicago，the
work suggests that loneliness is a warning （23）B，much like physical pain．"This feeling is so bad because （24）D of us wants to be forgotten； that's also what human means，"he says．"It makes us（25）C for other people and want to be with friends when we're lonely．"
| 16．A．when | B．where | C．how | D．if |
| 17．A．explains | B．talks | C．replies | D．answers |
| 18．A．collected | B．grew | C．found | D．surveyed |
| 19．A．important | B．different | C．interesting | D．difficult |
| 20．A．in | B．between | C．about | D．both |
| 21．A．work | B．health | C．life | D．feelings |
| 22．A．fills | B．makes | C．builds | D．repairs |
| 23．A．note | B．sign | C．sound | D．picture |
| 24．A．each | B．nothing | C．any | D．none |
| 25．A．look | B．live | C．care | D．think． |
7．-I want to buy_________ trousers．How much _________ they？
-20dollars．（ ）
-20dollars．（ ）
| A． | this； is | B． | this； are | C． | these； do | D． | these； are |
1．---would your sister go on a trip this weekend？
---If I don't go，___________．（ ）
---If I don't go，___________．（ ）
| A． | so does she | B． | so she will | ||
| C． | neither will she | D． | neither does she |