A:used to get up; used to kee
B:were used to getting up; was used to kee
C:used to get up; was used to keeping
D:were used to get up; was used to kee
元宵节期间,哈尔滨冰天雪地与泉州气温差异很大,主要影响因素是( )
首先以“尊王攘夷”为口号扩充疆界的国家是( )
设向量a→与b→的夹角为,定义a→与b→的“向量积”:a→×b→是一个向量,它的模a→×b→=a→b→sinθ,若a→=(-3,-1),b→=(1,3),则a→×b→ =( )
下列不能反映桑娜一家人“穷”的是( )。