问题 单项选择题 A1型题

有关放射免疫显像的描述不正确的是()

A.用放射性核素标记肿瘤表面特异性抗原的抗体,标记抗体与肿瘤抗原特异结合,从而对肿瘤进行显像或治疗

B.In-B用于结、直肠癌或卵巢癌显像

C.正常组织非特异性结合较低

D.放射性核素标记的NR-LU-10用于小细胞肺癌显像

E.放射性标记的抗体血液清除慢

答案

参考答案:C

解析:放射免疫显像存在的问题是正常组织的非特异性结合高。

阅读理解

Earthquakes happen without warning(前兆). They can happen any time of a day, at any point during the year. When an earthquake is happening, you should know what you should do or not do.

Do NOT go outside. You could get injured from falling glass or parts of buildings. If you are outside, stay away from buildings and power lines(输电线).

Stay under a desk, table, or other strong furniture. Hold on to it. Or stay in a corner of the building. Cover your face and head with your arms and cover your mouth with a towel or clothing. Stay inside until shaking stops and it is safe to go outside.

Keep away from windows, pictures or advertisements on the wall or the building, and anything else that could fall and hurt you. Most people get injured by falling things during an earthquake, not by the shaking itself.

Also keep away from a fire. You could fall down and burn yourself on the fire.

If you are driving when an earthquake happens,stop the car if it’s safe. Stay inside your car until the earthquake stops, and don’t drive near bridges. Try not to stop by power lines or trees. These could fall and hurt you.

小题1:It isn’t safe for you to ______ while the earthquake is happening.

A.run out of the building

B.stay in a corner of the building

C.cover your head with your arms

D.cover your mouth with a towel小题2:From this passage, we know ______ .

A.all people are frightened at earthquakes

B.earthquakes may happen at any time

C.we can’t save ourselves in an earthquake

D.people won’t get injured in an earthquakes if they are careful enough.小题3:The best title for this passage should be “ _____________ ”

A.How Earthquakes Happen

B.How to Drive a Car

C.What We Should Do in Earthquakes

D.Why Earthquakes Happen

单项选择题