Oh, John. ________you gave us!

Oh, boys and girls, come in please.And make _________at home. A: yourself B: us C: you D: yourselves

关于Ping的使用，下面正确的有（）。 A: pingtec B: ping-s202.38.75.14 C: pingboozhang@sdb D: pingwww.ustc

Oh! I came in a hurry and forgot to bring food. Never mind. You can have (). A: us B: ours C: you D: yours

‏Oh, John________ you gave us！‏‏‏ A: How a great surprise B: how pleasant surprise C: what a pleasant surprise D: what pleasant surprise

关于Ping命令的使用，下面正确的有（）。 A: pingteC.oh.us B: ping-s202.38.75.14 C: pingboozhang@sdB.aC.cm D: pinghttp：//www.ustC.edu.cn

-Why not join us in the game?-________________. A: OK! I'm coming B: No, you do the same C: Oh, that's all right D: Don't mention it

( )6. — Oh! I came in a hurry and forgot tobring food. — It doesn’t matter; you can have ____.A. we B. our C. us D. ours A: A. we B: B. our C: C. us D: D. ours

关于Ping命令的使用，下面正确的有(25)。 A: pingtec.oh.us B: ping-s202.38.75.14 C: pingboozhang@sdb.ac.cm D: pinghttp：//www.ustc.edu.cn

Fe(OH)3、 CoO(OH)、NiO(OH)氧化性的强弱_____。? NiO(OH);;;〉 CoO(OH) ;〉;Fe(OH)3;|CoO(OH) ;〉;Fe(OH)3 ;;;〉 NiO(OH)|Fe(OH)3;;〉 NiO(OH);;;〉 CoO(OH);;|;Fe(OH)3;;〉 CoO(OH);;;〉 NiO(OH);