先天性甲状腺功能减低症
A．智力低下，尿有鼠尿臭味
B．嗜睡、腹胀、便秘、少动
C．四肢细长、晶状体脱位
D．特殊面容、高腭弓、通贯手
E．智力正常、“O”形腿
参考答案：B
解析：21-三体综合征是最常见的一种染色体病。临床表现有智能低下，体格发育迟缓，性发育延迟，特殊面容及皮肤纹理特征等，可有高腭弓、通贯手、四肢短。苯丙酮尿症是由于苯丙氨酸代谢途径中酶缺陷所致，因患儿尿中排出大量苯丙酮酸等代谢产物而得名。临床表现有智能低下，癫癎发作，毛发、皮肤色浅，尿和汗液有鼠尿臭味。先天性甲状腺功能减低症典型症状有特殊面容和体态，躯干长而四肢短小；智能低下，嗜睡、淡漠，肌张力低下，神经反射迟钝；生理功能低下，精神、食欲差，少哭少动，体温低而怕冷，腹胀和便秘等。
| Read and choose. 阅读短文，选择正确的答案。 |
| Hello! My name is Zhang Tao. I'm eleven years old. I am in Class Four, Grade Five. I was busy last weekend. On Saturday, I stayed at home all day. I did my homework in the morning and cleaned my room in the afternoon. On Sunday, I visited my friend Jenny. It was her birthday. We danced and sang all morning. Jenny's mother made a birthday cake for us. We went to the zoo in the afternoon. We saw the animals show there. On Sunday evening, I played the piano first, and then watched TV. At ten o'clock I went to bed. |
| 1. —How old is Zhang Tao? —He is years old. |
[ ] |
| A. four B. five C. eleven |
| 2. On Saturday, he stayed at home . |
[ ] |
| A. in the morning B. all day C. in the afternoon |
| 3. was Jenny's birthday. |
[ ] |
| A. Sunday B. Saturday C. In the evening |
| 4. —On Sunday afternoon, where did they go? —They . |
[ ] |
| A. go to the zoo B. went to the zoo C. were at home |
| 5. Did Jenny clean the room? |
[ ] |
| A. Yes, she did. B. No, she didn't. C. We don't know. |