题目内容
16．How many more weeks will have to pass ______ scientists succeed in providing a cure for H7N9bird flu？（ ）| A． | when | B． | before | C． | until | D． | since |
分析 还有多少周过去之后，科学家才能成功地发现治疗H7N9禽流感的方法？
解答 答案：B 考查时间状语从句．when当…时候；before在…之前；until到…为止，直到…才；since自从．根据句意，B项符合题意．
点评 状语从句由从属连词引导，从属连词在句中不充当句子成分，只起连接作用，状语从句放在句首时，要用逗号，放在句尾时不用．弄清楚各个从属连词的用法，然后根据题意选择最符合题意的选项．
练习册系列答案
文敬图书课时先锋系列答案
相关题目
9．假设你是某校学生会主席李华．你校将举办一次英语演讲比赛（speech contest）．希望你校外籍教师Kelly女士来做评委．请参照以下比赛通知给她写一封邀请函．
注意：词数100左右．
**************************************
Dear Ms．Kelly，
With best wishes，
Li Hua．
| 英语演讲比赛 主题：中国民俗与文化 时间：6月10日下午2：30-5：30 地点：学校艺术会堂 参赛选手：10名学生 联系人：李华（电话36789666） 欢迎大家光临 |
**************************************
Dear Ms．Kelly，
With best wishes，
Li Hua．
7．
A new report by the World Health Organization （WHO） reveals that around one in a hundred deaths worldwide is due to passive smoking，which kills an estimated 600，000people a year．
In the first study to assess the global （41）C of second-hand smoke，WHO experts find that children are more （42）J exposed to second-hand smoke than any other age-group，and around 165，000of them a year die because of it．
Children's exposure to second-hand smoke is most likely to happen at home，and the double blow of infectious diseases and tobacco seems to be a deadly （43）I for children in these regions．Commenting on the findings，Heather Wipfli and Jonathan Samet from the University of Southern California，said policymakers try to （44）K families to stop smoking in the home．
While deaths due to passive smoking in children were skewed（曲解） toward poor and middle-income countries，deaths in adults were （45）B across countries at all income levels．
In Europe's high-income countries，only 71child deaths occurred，while 35，388deaths were in adults．Yet in the countries like Africa，an estimated 43，375deaths due to passive smoking were in children （46）F with 9，514in adults．
Only 7.4percent of the world population currently lives in places with （47）A smoke-free laws，and those laws are not always（48）H enforced（施行）．In places where smoke-free rules are （49）E，research shows that exposure to second-hand smoke in high-risk places like bars and restaurants can be cut by 90percent，and in general by 60percent，the researchers said．
Studies also show such laws help to reduce the number of cigarettes smoked by smokers and lead to higher （50）G rates in those trying to quit．
| A．comprehensive B．spread C．impact D．incredible E．observed F．compared G．success H．firmly I．combination J．heavily K．motivate |
In the first study to assess the global （41）C of second-hand smoke，WHO experts find that children are more （42）J exposed to second-hand smoke than any other age-group，and around 165，000of them a year die because of it．
Children's exposure to second-hand smoke is most likely to happen at home，and the double blow of infectious diseases and tobacco seems to be a deadly （43）I for children in these regions．Commenting on the findings，Heather Wipfli and Jonathan Samet from the University of Southern California，said policymakers try to （44）K families to stop smoking in the home．
While deaths due to passive smoking in children were skewed（曲解） toward poor and middle-income countries，deaths in adults were （45）B across countries at all income levels．
In Europe's high-income countries，only 71child deaths occurred，while 35，388deaths were in adults．Yet in the countries like Africa，an estimated 43，375deaths due to passive smoking were in children （46）F with 9，514in adults．
Only 7.4percent of the world population currently lives in places with （47）A smoke-free laws，and those laws are not always（48）H enforced（施行）．In places where smoke-free rules are （49）E，research shows that exposure to second-hand smoke in high-risk places like bars and restaurants can be cut by 90percent，and in general by 60percent，the researchers said．
Studies also show such laws help to reduce the number of cigarettes smoked by smokers and lead to higher （50）G rates in those trying to quit．
4．What's the chance of ________ a general election this year？（ ）
| A． | there being | B． | there to be | ||
| C． | there be | D． | there going to be |
11．The town government had to find a new place to rebuild it，for it___ by a strong earthquake．（ ）
| A． | was ruined | B． | had ruined | C． | had been ruined | D． | has been ruined |
1．The house rent is expensive．I've got about half the space I had at home but I have to pay ______ here．（ ）
| A． | as three times much | B． | as much three times | ||
| C． | much as three times | D． | three times as much． |
8．-I'm sure Andrew will come out first in this speech competition．
-I think so．He ______ for it for months．（ ）
-I think so．He ______ for it for months．（ ）
| A． | is preparing | B． | has been preparing | ||
| C． | had been preparing | D． | was preparing |
5．________ it is to climb the mountain in the beautiful season!（ ）
| A． | What a fun | B． | What fun | C． | How fun | D． | How a fun |