题目内容
12．Of those who are married，in more than 80 percent of cases，the wives'education background is equal or higher than of their husbands．（ ）| A． | it | B． | one | C． | that | D． | the one |
分析 在所有已婚人士当中，80%的情况是，妻子的教育背景和他们的丈夫的教育背景是一样的甚至还要高．
解答 答案：C．
分析句子的意思可知，本句是一个比较级的句子，比较的主体是education background，为了体现表达对象的一致性和避免重复，通常使用代词that来代替前面的被比较事物（复数的话用those），其他代词没有这种用法．故选C．
点评 在本句中that用来指代前面出现的the education system，用来表示比较对象的一致性；the one特指刚刚提到的某个事物；one用来泛指可数名词单数；it表示特指前面提到的名词；
练习册系列答案
天天向上一本好卷系列答案
小学生10分钟应用题系列答案
相关题目
20．On the top of the mountain stands an ancient temple from the Tang Dynasty．（ ）
| A． | dated | B． | having dated | C． | dating | D． | to date |
4．Blood donation，also called blood banking，is a wonderful thing to do．It is an easy and direct way to contribute to social work and help the community．It helps to save lives and helps those who are in need of blood due to bad condition or the heavy loss of blood during operations or in accidents．
You are able to give or donate blood every three or four months，and it is a great way to make a huge difference to someone's life and you can always be proud of it after making valuable contributions to society．Blood donation is not a big problem，but you need to keep a few points in mind．
Before donating blood，make sure that the ferrum（铁） level in your body is high enough and for that you should take a healthy diet．Do not go for blood donation on an empty stomach．You should follow the correct process so that everything goes well．After having a balanced diet you will feel strong and comfortable to donate blood．Afterwards，you will not feel faint or weak．
For required hemoglobin（血红蛋白） in your body，drink lots of juice and other drinks．Fruit juice，such as apple juice is very good for increasing the blood level in your body．
For a good blood flow in your body，drink at least 6-7 glasses of water every day．Completely avoid a day before and after giving blood，taking alcohol（酒）．Do not smoke half an hour before giving blood．
When you are going for blood donation，be relaxed，which helps keep the right blood pressure．During the blood donation activity，take a deep breath and try to calm yourself．Don't join in some other activities．
When you donate blood，you are making the effort to save someone's life．Blood donation is a very simple and fast process，but you need to take care of yourself after donating blood．Proper care helps to reduce side effects．The following are a few tips that will help you out．
Take a rest for 15minutes after the donation．It helps you to feel relaxed．
Eat something and drink juice before leaving the blood donation centre．Make sure that you have meals after donating blood．Smoking should be avoided for one hour after the process．Avoid some activities right away，for example，driving．
Finally，be proud of yourself because you have done a great thing in helping to save someone's life．Blood donation is a very important activity．
Title：Blood Donation-an Important Activity
You are able to give or donate blood every three or four months，and it is a great way to make a huge difference to someone's life and you can always be proud of it after making valuable contributions to society．Blood donation is not a big problem，but you need to keep a few points in mind．
Before donating blood，make sure that the ferrum（铁） level in your body is high enough and for that you should take a healthy diet．Do not go for blood donation on an empty stomach．You should follow the correct process so that everything goes well．After having a balanced diet you will feel strong and comfortable to donate blood．Afterwards，you will not feel faint or weak．
For required hemoglobin（血红蛋白） in your body，drink lots of juice and other drinks．Fruit juice，such as apple juice is very good for increasing the blood level in your body．
For a good blood flow in your body，drink at least 6-7 glasses of water every day．Completely avoid a day before and after giving blood，taking alcohol（酒）．Do not smoke half an hour before giving blood．
When you are going for blood donation，be relaxed，which helps keep the right blood pressure．During the blood donation activity，take a deep breath and try to calm yourself．Don't join in some other activities．
When you donate blood，you are making the effort to save someone's life．Blood donation is a very simple and fast process，but you need to take care of yourself after donating blood．Proper care helps to reduce side effects．The following are a few tips that will help you out．
Take a rest for 15minutes after the donation．It helps you to feel relaxed．
Eat something and drink juice before leaving the blood donation centre．Make sure that you have meals after donating blood．Smoking should be avoided for one hour after the process．Avoid some activities right away，for example，driving．
Finally，be proud of yourself because you have done a great thing in helping to save someone's life．Blood donation is a very important activity．
Title：Blood Donation-an Important Activity
| The （40）importance/significance of blood donation | ●（41）Contributing to social work and the community ●Helping those people who suffer the loss of （42）blood ●Giving yourself a sense of pride |
| （43）Before the donation | ●Take a healthy （44）diet for a high ferrum level ●Drink fruit juice for enough hemoglobin ●Drink at least 6-7 glasses of water daily for a good （45）flow of blood ●（46）Avoid taking alcohol and smoking cigarettes |
| During the donation | ●Relax and breathe deeply ●Never take （47）part in other activities |
| After the donation | ●Take a rest ●Don't skip （48）meals ●Don't smoke until one hour later ●Don't join in some activities like driving （49）immediately |