把60分解质因数:60=1×2×2×3×5.______.(判断对错)
1既不是质数也不是合数,1既不是质数也不是合数
所以原题说法错误.
故答案为:错误.
He's a new bike for three weeks. [ ]
A. buy
B. buying
C. had
D. bought
简要病史:男性,20岁,恶心、厌油腻半个月,皮肤及尿色黄5天。