问题
单项选择题
A client has just finished his glucose tolerance test. How many hours should it take for his blood glucose level to return to normal ？（）
A．2 hours.
B．3 hours.
C．5 hours.
D．6 hours.
答案
参考答案：B
解析：
The blood glucose level should return to normal within 3 hours. Some hypoglycemia (a less than normal amount of glucose in the blood) within this time can be expected without causing problems.