设x12+x-12=t>0,则t2=x+x-1+2=5,∴t=5.
故答案为5.
读句子,选出恰当的单词填空。
1. A: Who's this (man / woman)?
B: He's my uncle.
2. A: How many people are there in (you / your) family?
B: Six.
3. What would you like (to / for) dinner?
4. I'd like (two / too) hamburgers for dinner.
5. What can you see (on / in) my kitchen?
糖尿病酮症酸中毒出现严重失水的原因中,少见的是()
A.高血糖引起渗透性利尿
B.大量酮体从肾、肺排出带走大量水分
C.大量酸性代谢产物排出,加重水分丢失
D.恶心、呕吐等胃肠道症状导致体液丢失
E.高热、大汗等引起体液丢失