A:sending
B:to send
C:having sent
D:to have sent
⑴____ A. must B. public C. question D. cup
⑵____ A. danger B. her C. litter D. mother
⑶____ A. stay B. away C .today D. Saturday
⑷____ A. great B bread C. ready D. head
⑸____ A. dear B. bear C. here D. nearby
如图所示是电阻甲和乙的U﹣I图象,下列说法正确的是( )
如图,2012年4月5日,主题为“从文明的展开到文明的展台”的黄帝故里拜祖大典在新郑隆重举行,吸引了大批海内外炎黄子孙到此寻根拜祖。拜祭黄帝是因为 ( )