Tom _________ Mary in 1998. That is to say, they _________ for 12 years.
A:got married with , have got married
B:got married to , have married
C:married, have been married
D:married to, have been married
在生产和科学研究中需要用到一些保护气。当焊接金属时,为了隔绝空气,能作为保护气的是( )
“(明代)大学士成为没有宰相名义的宰相……但大学士毕竟不同于正式宰相,正式宰相可以单独推行政令,大学士便无此权。他只能依靠‘票拟’签注意见,来窃弄皇帝的权力,只有黑市地位,没有法定地位。”作者意在表达( )