A:达·芬奇
B:但丁
C:哥白尼
D:布鲁诺
What time are they going to Hubei Museum this Saturday?
一共有多少只动物?
若a<b<0,则下列式子:①a+1<b+2;②ab>1;③a+b<ab;④1a<1b中,正确的有( )