问题 单项选择题

心导管检查,平均血氧含量右心房高于上下腔静脉的先心病是

A.肺动脉狭窄

B.房间隔缺损

C.法洛四联症

D.动脉导管未闭

E.室间隔缺损

答案

参考答案:B

解析:[解题思路] 正常情况下右心房与上下腔静脉的血氧含量是一样的,如果右心房的血氧含量高于上下腔静脉的血氧含量,一定有左向右分流即房间隔缺损。

阅读理解

阅读理解。

      At a day care center in Texas, children were playing outside. One of the children was Jessica McClure.

She was only 18months old. Her mother, worked at the day care center, was watching the children. Suddenly

Jessica fell and disappeared. Jessica's mother screamed and ran to her.

      A well was in the yard of the center. The well was only eight inches across and a rock always covered it.

But children had moved the rock. When Jessica fell, she fell right into the well.

      Jessica's mother reached inside the well, but she couldn't feel Jessica. She ran to a phone and dialed 911

for help. Men from the fire department arrived. They discovered that Jessica was about 20 feet down in the

well. For the next hour the men talked and planned Jessica's rescue.

      "We can't go down into the well," they said. "It is too narrow. So, we're going to drill a tunnel across to

Jessica. When we reach her, we'll bring her through the tunnel and up through our hole."

      The men began to drill the hole at 11a.m. on Wednesday, October 14, 1987. The men had a difficult job;

they were drilling through solid rock. During her days in the well, Jessica sometimes called her mother,

sometimes she slept, sometimes she cried and sometimes she sang.

      All over the world, people waited for news of Jessica. Everyone worried about her.

      At 8 p.m. on Friday, October 16, men reached Jessica and brought her up from the well. Then paramedics

rushed her to the hospital. Jessica was dirty, hungry, thirsty and tired. Her feet and forehead were badly injured. But she was alive. 

      After Jessica's rescue, one of the rescuers made a metal cover for the well which wrote,"To Jessica, with

love from all of us."

1. Which of the following shows the right order of what happened to Jessica?

    a. People talked and planned Jessica's rescue.

    b. Jessica's feet and forehead were badly injured.

    c. Jessica fell into a well in the yard.

    d. People began to drill a hole and a tunnel.

    e. Someone moved the rock on the well.

    f. she was bought up from the well.

    g. Jessica sometimes called or slept or cried or sang.

    h. Her mother reached inside the well [ ]

A. e, c, b, g, a, d, h, f

B. c, b, a, d, g, f, h, e

C. c, e, g, a, d, h, f, b

D. e, c, h, a, g, d, f, b

2. Jessica stayed in the well at least _____. [ ]

A. 45 hours

B. 46 hours

C. 57 hours

D. 58 hours

3. The best title of the passage is _____. [ ]

A. An Unluckily Girl

B. An Unpleasant Experience

C. Everybody's Baby

D. Mother's Fault

单项选择题