新生儿生理性黄疸的原因，以下哪项不符合？（）
A.红细胞的寿命短
B.红细胞数量多
C.红细胞内酶发育不成熟
D.肠道内正常菌群尚未建立
E.肝功能不成熟
参考答案：C
解析：新生儿生理性黄疸产生的原因主要有两方面：一是新生儿胆红素代谢的特点所决定，胎儿出生后由于血氧分压突然升高，红细胞破坏很快，产生较多胆红素，而新生儿肝酶活力低，无法清除过多的胆红素，因而发生黄疸。
| 阅读理解。 |
| Fred liked playing tricks on others. One afternoon he went to a shop and bought some bread. On his way home he saw Johnson, an old man about sixty riding a donkey (驴). The boy walked to the old man and decided to play a trick on him. He thought for a moment and then he had an idea. "Hello, my friend," Fred said in a loud voice. "Please come and have a piece of bread." "Thank you very much." Johnson got off the donkey and said gladly." "But I have already had lunch." "I'm sorry. I'm talking to your donkey, not to you." Fred said with a smile. Johnson understood at once that the boy was playing a trick on him. He became angry, but he didn't show his anger. He just turned quickly to his donkey, held up the lash (鞭子) and hit it on the back. "Before we set off, I asked if you had friends in the town. You said again and again that you hadn't. Can you explain why the young man asked you to have the bread, then?" The more the old man said, the less he could control his anger. He finally shouted, "I'll beat you to death if you dare fool me again!" Hearing this, Fred's face turned red and he left away quickly. |
| 1. Fred ______. |
[ ] |
| A. was clever but not polite. B. liked playing with donkeys C. often help others D. wasn't clever |
| 2. Johnson ______ at first. |
[ ] |
| A. beat his donkey to death B. was angry to meet the boy C. wanted to eat the bread D. thought the boy was talking to him |
| 3. Which of the following is true? |
[ ] |
| A. The old man didn't beat the donkey. B. The old man taught Fred how to be polite. C. The old man beat the donkey to death. D. The man played a trick back on the boy. |