A:t hey found many mistakes in the report
B:Sam made lots of mistakes in the report
C:there are plenty of mistakes in the report
D:the report is full of mistake
如图,两根电线杆相距Lm,分别在高10m的A处和15m的C处用钢索将两杆固定,求钢索AD与钢索BC的交点M离地面的高度MH.
The man you referred to to be an honest man.
1888年康有为第一次上书光绪帝时指出:“倭伺吉林于东,英启藏卫而窥川滇于西,俄筑铁路于北而迫盛京,法煽乱民于南以取滇粤。”由此可知戊戌变法的重要背景是( )
“陈桥兵变”、“杯酒释兵权”等历史典故与下列哪一个人物有关( )