A:物块的质量为500g,浸没在水中受到的浮力为3N
B:物块浸没在酒精中时,测力计的示数为小于3N
C:物块的体积是150cm3、密度为3g/cm3
D:物块浸没时,排开酒精的质量大于排开水的质量
根据短文内容判断下列说法的正误。
Before,there was no zoo in my city.Now there is a big zoo.There are lots of animals.Last Sunday,I went to the zoo with my parents.In the morning,I got up at 7 o'clock.Then,I had breakfast.We went to the zoo by car.I saw many animals in the zoo,such as monkeys,tigers,lions and so on.I was very happy.