已知x=1是方程x2+mx+3=0的一个实数根,则m的值是____.
选出所给句子的答句,将其字母代号填在括号内。
①What time do you go home?____ A. Thank you.
②Where is Miss Li?____ B. At four.
③Do you like puppets?____ C. Yes, I do.
④Whose jeans are they?____ D. They're my father's.
⑤Here's a kite for you.____ E. She's in the classroom.
一棵龙眼树上结满了龙眼,体现了生物的某种特征,符合这一特征的选项是( )
电视剧《封神榜》中的土行孙有“遁地”能力,如果他从家中钻入地心,始终保持直线前进,他到达另一地表的距离为( )