【单选题】What does the speaker say about the members of senior citizens'club?
A.
They can attend any courses for free.
B.
They arrange discussion groups for people.
C.
They learn how to communicate with others.
D.
They want to be carpenters or craftsmen.
【单选题】show respect to senior members
【单选题】表示均数抽样误差的大小的统计指标是( )
【单选题】show respect to senior members
【单选题】show ( ) to senior members
【简答题】某元素的原子核外有三个电子层, M 层的电子数是 L 层电子数的 ,则该元素的原子是( )(填元素符号)。
【简答题】拜年 show () to senior members
【单选题】2017年3月7日上午习近平参加十二届全国人大五次会议辽宁代表团审议。习近平指出,( )是辽宁振兴必由之路。