题目内容
27. In the absence ____ necessary exercise, he can get ill easily. So he is often absent ___ class.
| A．for / in | B．of / for | C．of / from | D．with / from |
C
解析
培优口算题卡系列答案
开心口算题卡系列答案He missed ______ gold in the high jump, but will get ______ second chance in the long jump.
| A．the; a | B．/; a | C．the; the | D．a; / |
London has become a cycle friendly zone after the launch of a new bike hire 
scheme.It has been designed to encourage more people to cycle in and around central London.
So how does it work？First you have to sign up to the scheme to be sent a key.The key will unlock one of the bikes，which are kept at docking stations in and around central London.You have to pay an access fee for the key and then you pay as you go，for he length of time you use the bike.
Transport for London， which runs the scheme，are hoping to have 6，000 bikes and 400 docking stations in place by the end of the year.The new hire system is hoping to ease congestion in London and is expected to generate up to 40，000 extra cycle trips a day into the city centre.London Mayor Boris Johnston launched the scheme and said London had been “filled with thousands of gleaming machines that will transform the look and feel of our streets and become as commonplace on our roads as black cabs and red buses”.
However，there have been a few problems since the scheme was launched last Friday.On the first day some people found they couldn’t dock their bike properly and their usage of the bike had not registered.Transport for London did admit they had been expecting a few “teething problems”and have said they wouldn’t charge for the first day as a“gesture of goodwill”.Some other people have criticized the lack of docking stations and locks for the bikes as well as the price it costs to hire the bicycles.
Despite the comments，the green-thinking London Mayor still seems very positive about things，saying，“My campaign for the capital to become the greatest big cycling city in the world has taken a gigantic pedal-powered push forwards.”
【小题1】A new bike scheme has started in London to.
| A．earn more money for the government |
| B．encourage the citizens to take exercises |
| C．deal with the city’s traffic problems |
| D．increase employment opportunities |
a.pay a usage charge according to the time b.pay for the key
c.cycle in and around central London d.sign up as a member to get a key
| A．b-d-c-a | B．b-c-a-d | C．d-c-b-a | D．d-b-c-a |
| A．is started by volunteers in London |
| B．has prepared cnough cycles available |
| C．is expected to improve the environment |
| D．has become as popular as cabs and buses |
| A．People were unable to lock properly. |
| B．People could not dock the bikes properly. |
| C．People had no enthusiasm about the scheme. |
| D．It’s too expensive for some people to hire a bike. |
| A．the‘cycling revolution’failed once started |
| B．the scheme will be put off due to the problems |
| C．all the citizens in London are in favor of the scheme |
| D．the London Mayor has great confidence in the scheme |
When we donate blood, a small amount is usually taken in advance for at least ABO and Ph systems typing. If you are O+, the O is your ABO type and the + is your Rh type. It is possible to be A, B, AB, or O as well as Rh + or Rh-.
The ABO system was discovered by Karl Landsteiner in the early 1900s. He was awarded the Nobel Prize for his achievements. There are four basic types of blood in the ABO system: A, B, AB and O. Everybody is born with one of these four types of blood. We get blood type, just like hair color and height from parents. Because of the substances(物质) contained in each type, the four groups must be transfused carefully, If two different blood types are mixed together, it may put a person into an extremely dangerous situation. Basically, A and B cannot be mixed. A and B cannot receive AB, but AB may receive A or B. In an emergency, type O blood can be given because it is most likely to be accepted by all blood types, so it is often called the universal donor. However, there is still a risk. For the opposite reason, AB is sometimes called the universal receiver. However, because there can be so many reactions in the blood bank of the hospital.
There is a relationship between your blood type and your nationality. Among the Europeans, about 45 percent have type O while 42 percent have type A. The rarest is type AB. Other races have different percentage. For example, some American Indian groups have nearly 100 percent type O out of 100 donors in the world…
|
84 donors are Rh+ |
16 donors are Rh- |
|
38 are O+ |
7 are O- |
|
34 are A+ |
6 are A- |
|
9 are B+ |
2 are B- |
|
3 are AB+ |
1 is AB- |
1. Which of the following shown the correct relationships in blood transfusions?
A B
A B
A B
A B
AB O
AB O
AB O
AB O
A B C D
2. The underlined word “transfuse” most probably means ________.
A. to put the blood into a container
B. to move the blood from one place to another K^S*5U.C#O
C. to put the blood of one person into the body of another
D. to give power to another person
3. The writer suggests that the third most common blood type among the Europeans is ______.
A. B B. A C. AB D. O
4 The text mainly tells us ______.
A. about the basic types of human blood
B. what kind of blood is the most common
C. about Karl Landsteiner who won the Nobel Prize
D. the relationship between blood type and nationality