下列描述主动脉瓣二瓣化畸形，错误的是（）。
A.主动脉瓣开放面积减小
B.左心室壁增厚
C.左心室壁运动幅度减弱
D.主动脉瓣叶回声增强
E.CDFI示主动脉瓣收缩期前向血流呈五彩镶嵌色
参考答案：C
解析：主动脉瓣二瓣化为常见的先天性主动脉瓣异常，多为左冠瓣与右冠瓣交界融合，由于主动脉瓣狭窄使左心室流出道梗阻，致左室心肌向心性肥厚，但左室壁运动幅度正常。
| 阅读理解。 | ||
Airlines (CSA) to Beijing, where they will stay at the Beijing Zoo, said Wolong director Zhang Hemin. Liu Shaoyong, a leader of CSA, said the pandas were scheduled (预定) to leave Chengdu at 3 p. m. Saturday. They will travel on a Boeing 747 -700 plane with bamboo and water. "There is enough water now, but food is still a big problem. The pandas need bamboos and apples." Xiong Beirong said. After the earthquake, tons of bamboo shoots, apples, eggs, milk powder and medicines were brought to the center, but the supplies could only last about a week, she said. There are about 1,590 pandas living in the wild in China, mostly in Sichuan and the northwestern provinces of Shaanxi and Gansu. | ||
| 1. This passage is probably from _____. | ||
| A. a novel B. a storybook C. a newspaper D. a diary | ||
| 2. Which of the following sentences is NOT true according to the passage? | ||
| A. Six pandas left an important panda base in Wolong after the earthquake. B. Eight other pandas will be carried to Beijing by plane. C. Pandas eat bamboo shoots, apples, eggs, milk powder and so on. D. Water is still a big problem for the pandas after the earthquake. | ||
| 3. What does the underlined word "supplies" mean in Chinese? | ||
| A. 滋补品 B. 供应品 C. 药品 D. 保健品 |
