骨肉瘤可采取的治疗方法为（） A.放射治疗 B.化学治疗 C.手术治疗 D.放射治疗

阅读理解。

      Every year, World Blood Day is celebrated by blood services worldwide on 14 June, the birthday

of Nobel Prize winner Karl Landsteiner, the man who discovered the ABO blood group system. If you

have every thought of becoming a blood donor, just register to do it. And you should never worry about

the donation.

     Just under a pint (around 470ml) of blood is taken at one sitting. This amount is no more than 13

percent of your total blood volume, and is quickly replaced by your body.

     It may come as a surprise, but whole blood is only rarely used. Different blood components are used

to treat a range of conditions. None goes to waste. Red blood cells are frequently used to replace heavy

blood loss after an accident, surgery or childbirth. White blood cells and antibodies (抗体) are used to

help people fight infections if their immune system doesn't appear to be responding to antibiotics (抗生

素). Plasma (血浆), the straw-coloured fluid which carries the blood cells and contains proteins, are

used to treat burned patients.

     First-time donors should be aged between 17 and 65, weigh at least 50kg and be in good health. If

you have donated before, you can start being a donor again up to your 70th birthday.

     Although most people are able to give blood, some people who pose health risks or are at a higher

risk of having come into contact with an infectious disease are no tasked to be donors. Pregnant women

or those who have had a baby in the last 9 months should not donate blood.

     Blood has a very short shelf life. Some blood components can be kept longer than others, for instance

red blood cells will keep for 35 days but platelets(血小板)for only five. Remember, you should wait at

least 16 weeks before donating blood again.

1. People should never worry about the donation mainly because _____.

A. it causes no pain to their body

B. being a blood donor is a great honor

C. their bodies can produce new blood soon

D. people have a mature research on it

2. What component of blood is used to treat burned patients?

A. Plasma

B. Red blood cell

C. Antibody

D. White blood cell

3. We can learn from the passage that _____.

A. whole blood is most widely used in hospital

B. platelets can be kept for more than 10 days

C. people can donate their blood four times a years

D. people can donate at most 470 ml of blood each time

4. Who can donate their blood?

A. A teenager who is studying in a primary school

B. A mother who is about to give birth to a new baby

C. An adult who smokes and drinks from time to time

D. A man just coming back for a place suffering from malaria

5. What is the purpose of the author in writing this passage?

A. To teach people how to be a blood donor

B. To give people the knowledge of blood donation

C. To advise people to benefit from blood donation

D. To remind people of the importance of blood donation

下列关于抽动症状的说法中不正确的是（）

A.可表现为运动抽动或发声抽动

B.包括简单抽动和复杂抽动

C.可发生在单个或多个部位

D.有不随意、突发和快速的特点

E.有节律性

青少年甲亢患者（）

A．抗甲状腺药物治疗 

B．手术治疗 

C．131I治疗 

D．甲状腺素治疗 

E．观察

《巴黎公社公告》第44号向人们宣布：“你们是自己命运的主人。最近成立的代表机构在你们的支持下，将着手补救前 * * 造成的灾难：遭到破坏的工业，停顿下来的劳动，瘫痪的商业贸易，即将获得有力的推动。”这在本质上表明（）

A.巴黎公社是劳动人民的 * *

B.巴黎公社旨在恢复发展生产

C.巴黎公社获得农民阶级支持

D.巴黎公社是工商业代表机构

右图所示的红绿色盲患者家系中，女性患者Ⅲ-9的性染色体只有一条X染色体，其他成员性染色体组成正常。Ⅲ-9的红绿色盲致病基因来自于（）

A.Ⅰ-1

B.Ⅰ-2

C.Ⅰ-3

D.Ⅰ-4