问题 单项选择题

脏器功能显像时,当受检脏器功能不良时如何选择显像剂剂量()。

A.因浓聚下降,应适当加大显像剂的用量

B.排泄减慢应适当减少用量

C.功能不良时不能应用放射性核素检查

D.此时检查意义不大

E.先做预试验,大致了解其功能再确定给药剂量

答案

参考答案:A

解析:在受检脏器功能不良时,显像剂的浓聚下降,需适当加大显像剂的用量以提高图像的清晰度和分辨率。

阅读理解

根据短文内容判断下列句子的正误,正确的用 "A" 表示,错误的用 "B" 表示。

    In Europe many people died during the Second World War. As a result, at the end of the war there

wcrc manv orphans(孤儿)there.A man called Hermann Gmeiner wanted to help these children. His idea

was simple. He wanted orphans to have a home, and he wanted them to have the care ancl kindness of

parents.  Gmeiner asked people to give him some money.  With this money he built the first SOS Children's Village at Imst, in Austria.  It opened in 1949. This is how the SOS Children's Village started. The

letters SOS stand for "Save Our Souls(灵魂)".This means "Please help us!".An SOS Children's Village

giVeS help to orphans.

    Hermann Gmeiner's idea for helping orphans soon spread(传播)all over the world. By 1983 there were 170 SOS Children's Villages in the world. People in many countries give money to help the villages.Today the children from the first village are grown up. Now some of them work in other SOS Children's Villages.

    In SOS Villages orphans live in family groups. There are several houses in each village. The biggest

villages have 40 0r 50 houses! Between seven and ten children live in a house.  A woman lives with each

groul, of children and looks after them.  She gives the children a lot of love and kindness. She cooks for

them and makes comfortable(舒适的),happy home for them.

    Of' course, the children don't spend all their time in the village. They go. to school, they go out with

their friends and they go into town. But the village gives them a home-sometimes for the first time in heir

lives.

( )l.  An orphan is a child who has no parents; no brother and no sister.

( )2. Gmeiner built the first SOS Children's Village with his own money,

( )3. Some of the children who are grown up work in other SOS Children's Villages.

( )4. There are about 30 houses in the biggest SOS Children's Villages.

( )5. We can conclude(推论)from the article that the money for helping the SOS Villages mainly comes from people in general.

单项选择题