避雷针的保护作用在于( )。
B
暂无解析
Comrade Li ________ be in Beijing because I saw him in town only a few minutes ago.
This diploma ( 毕业文凭 ) ________ that you have completed high school.
1949年10月1日,中华人民共和国的成立标志着 _____。
Construction of the railways helped to develop the national _______ of Tanzania and Zambia.