The Haiti earthquake at the beginning of 2010 is believed _______ more than 100,0130 people and makes millions homeless, ______ it perhaps the most destroying earthquake in history.

多音字组词。

     sù ____

宿  xiù ____

     xiǔ ____

“水旱从水，不知饥馑，…天下谓之天府“。此水利工程是指（　　）

用数轴表示某些化学知识直观、简明、易记．下列数轴表示错误的是（　　）

在夜晚观星时可将活动观星图举过头顶来观察（      ）