把11只鸡放进3个鸡笼,至少有4只鸡要放进同一个鸡笼.______.
11÷3=3(只)…2(只),
3+1=4(只);
答:至少有4只鸡要放进同一个鸡笼.
故答案为:√.
.— I ____ to your birthday party last Sunday.
— Unfortunately, you were out on business.
A.had come
B.came
C.would come
D.would have come
负荷计算有几种方法?