问题 单项选择题

提高直肠癌诊断率的首要措施为

A.直肠指检

B.大便常规化验

C.乙状结肠镜检

D.粪便潜血试验

E.钡剂灌肠检查

答案

参考答案:A

解析:[解题思路] 中国人直肠癌75%以上为低位直肠癌,一般肛诊时手可触及,因此直肠指检是最简便的诊断方法,是提高直肠癌诊断率的关键。对直肠指检阴性而临床可疑的病例,则应做乙状结肠镜检查。粪便隐血试验对诊断直肠癌并无特异性。x线钡剂灌肠检查因放置肛管灌入钡剂时已超越癌肿,因而常不能看到下面的病变,因而钡灌检查对诊断直肠癌价值不大。

单项选择题
阅读理解

阅读理解。

     When his young son was ill, Mr Wei took him to a clinic (诊所). They were the first of the day and did

not have to wait long. The nurse took the boy into the doctor's room while Mr Wei waited outside. After a

few minutes, the doctor came out of his room and spoke to the nurse.

     "Have we got a screwdriver (螺丝刀)?" he asked her. The nurse looked in a drawer (抽屉) and found a

screwdriver. She gave it to the doctor and he went back into his room.

     A few minutes later he came out again. "I need a saw (锯)," he said to the nurse this time. Again the nurse

looked in the drawer. She found a saw and gave it to the doctor. He went back into his room.

     A few minutes later the doctor came out of his room for the third time. "I'm going to need a hammer," he

said. For the third time the nurse looked in the drawer. Shp found a hammer and gave it to the doctor.

     This time, Mr. Wei could not keep quiet." Excuse me," he said:"but what is wrong with my son? And what

are you doing to him?"

     "I haven't examined him yet," the doctor said. "I'm still trying to get my hag open."

1. Mr. Wei's son was _____. [ ]

A. waiting in a queue

B. angry about his waiting

C. impatient (不耐烦) to get in to see the doctor

D. the first person to be seen by the doctor

2. The doctor came out to _____. [ ]

A. ask for some tools

B. shout at the nurse

C. look in the drawer

D. explain something to Mr. Wei

3. The underlined word "hammer" in the 4th paragraph means _____. [ ]

A. a kind of medicine

B. a piece of medical equipment

C. a kind of everyday tool

D. a piece of furniture

4. At last, Mr. Wei _____. [ ]

A. offered to help the doctor get his bag open

B. wanted to be there when his son was examined

C. was worried about his son

D. helped the nurse look for the hammer

5. Which would be the best title for this passage? [ ]

A. Mr. Wei and His Son

B. The Doctor's Job

C. The Right Tools for the Bag

D. A New Way to Treat Patients