【单选题】C是线段AB上一点,D是线段CB的中点,已知图中所有线段的长度之和为23。线段AC和线段CB的长度都是正整数,那么线段AC的长度为:
【简答题】已知:如图,线段AB=10cm,点O是线段AB的中点,线段BC=3cm,则线段OC=( )cm。
【简答题】如图,线段AB上有两点C、D,且点D是线段CB的中点,AC=3,CD=5,则图中所有线段长的和是
【判断题】宋为关南四书付出经济代价的同时也获得了政治上的好处。()
【单选题】“ Leave behind his native Troy” means ____ .
A.
going away permanently from Troy.
【单选题】What happened to Hellen after the fall of Troy?
A.
She was killed by her former husband Menelaus.
B.
She killed herself out of shame.
C.
She was driven out of Troy by Trojans.
D.
She was forgiven by her husband and her people.
【单选题】全民国防教育的基础是(),又是全民国防教育强劲的助推剂,不仅能为全民国防教育打牢坚实的基础,还能有力地推动全民国防教育向前发展。