Babies need a lot of sleep and this is particularly________the newborn.
A:sure about
B:sure of
C:true about
D:true of
Name
Peter Brown
Age(年龄)
13
Telephone Number
58479122
Family Member (成员)
parents, brother, sister
Room
small, tidy
Who did Peter go to see in Hainan?
如图所示,用弹簧测力计测出小石块的重为3N,将小石块浸没在水中,弹簧测力计的示数变为1N.求: