A:博大精深
B:源远流长
C:包容性
D:多样性
测出某物体的重力大小如图所示,将它浸没在水中后,测力计的示数变为0.6N,取g=10N/kg.求:物体的密度.
It was a difficult time for the relatives of Missing MH370 passengers when they heard the bad news, but they didn't ________ hope.