问题 单项选择题

符合溶血性贫血的是()。

A.血间接胆红素增高、贫血、网织红细胞增高

B.血间接胆红素增高、贫血、网织红细胞正常或减低

C.血间接胆红素正常、贫血、网织红细胞增高

D.血间接胆红素正常、贫血、网织红细胞减低

E.血间接胆红素正常、贫血、网织红细胞正常

答案

参考答案:A

解析:我们在学习贫血的时候,经常需要化验血胆红素和网织红细胞,因为血间接胆红素增高见于各种溶血性贫血,而网织红细胞的高低与骨髓中红细胞系统增生的程度基本上是一致的。溶血性贫血时因骨髓红细胞系统增生明显活跃,网织红细胞会增高,因此,答案A符合溶血性贫血;骨髓增生异常综合征的骨髓呈现病态造血,因而会发生无效造血和原位溶血,结果出现血间接胆红素增高、贫血和网织红细胞正常或减低,因此,备选答案B符合MDS;再生障碍性贫血是骨髓造血功能障碍或衰竭,不伴溶血,所以血间接胆红素正常、贫血和网织红细胞感低,因此,备选答案D符合再生障碍性贫血。备选答案E见于缺铁性贫血诊断时,而备选答案C见于缺铁性贫血铁剂开始治疗有效时。

阅读理解

Research has shown that music has an important effect on one’s body and psyche (心灵). In fact, there is a growing field of health care known as music therapy, which uses music to treat diseases. Even hospitals are beginning to use music therapy. This is not surprising, as music affects the body and mind in many powerful ways.

Research has shown that quick music can make a person feel more alert, while slow music can produce a calm, deep thinking state. Also, research has found that music can change brainwave activity levels. This can help the brain to change speeds more easily on its own as needed, which means that music can bring lasting benefits to your state of mind, even after you’ve stopped listening.

Breathing and heart rates can also be influenced by music. This can mean slower breathing, slower heart rate. This is why music and music therapy can help reduce the damaging effects of long-term stress, greatly promoting (促进) not only relaxation, but health.

Music can also be used to bring about a more positive state of mind by helping to keep worries at bay. Music has also been found to bring many other benefits, such as lowering blood pressure and reducing the risk of strokes. It is no surprise that so many people are considering music as an important tool to help the body become or stay healthy.

小题1:What can we infer about music therapy?

A.It is a type of music.

B.It is a research about music.

C.It is a kind of musical effect on diseases.

D.It is the use of music method to help treat diseases.小题2:The reason why music can help deal with stress is that ________.

A.it is used by many hospitals

B.it can help change brainwaves

C.it does good to breathing and heart rates

D.it can bring a more positive state of mind小题3:According to the passage, music can help deal with all the following EXCEPT ________.

A.nervousness

B.mind illnesses

C.strokes

D.high blood pressure小题4:The passage is mainly about _________.

A.the importance of music therapy

B.benefits music can bring

C.research on the effect of music

D.diseases music can help heal

单项选择题