半衰期是46.3小时的核素是()。
A.89Sr
B.153Sm-EDTMP
C.186Re-HEDP
D.32P
E.90Y
参考答案:B
On the top of the mountain ______, dating from the 14th century.
A.does an old temple stand
B.stand an old temple
C.an old temple is standing
D.stands an old temple
良好的家庭秩序是建立良好的国家秩序的基础。