题目

（11分）在第3周期中，置换酸中氢的能力最强的元素的元素符号为       ，化学性质最稳定的元素符号是        ，最高价氧化物的水化物的酸性最强的化合物的化学式是        ，碱性最强的化合物的化学式是             ，显两性的氢氧化物的化学式是             ，该两性氢氧化物与盐酸、氢氧钠溶液分别反应的离子方程式为                              、                              ，原子A．根据句意及所给的中文，写出恰当单词，使句子的意思完整、正确。B．根据句意用括号中单词的适当形式填空，使句子的意思完整、正确。C．根据句意用括号中动词的适当形式填空，使句子的意思完整、正确。1.He broke his bowl because of his ____________(粗心)．2.______________ (无论何时) I see you, I can’t help smiling．3.You should fly your kite __________ (对抗，与……相反) the wind．4.If you want to __________ (成功), you should keep your feet on the ground．5.He learned this lesson the hard way — from his own ___________(个人的) experience．6.Shanghai is much ___________(big) than my hometown．7.Li Ming goes to see his grandparents at a (fix) date every month．8.We can’t find the differences between these two people____________(easy)．9.“You’re not children any more, so you’d better do it by_________ (you)．” the father said．10.— I want to study abroad, but I’m afraid I won’t be used to the lifestyle there．— It’s really hard to make the (decide)．11.As a result, he succeeded in ________(get) a scholarship．12.Daniel had his hair (cut) last Saturday．13.The blood he has donated is enough __________ (save) over seventy lives．14.While he ___________ (attend) the junior high, he tried out for the school team．15.Either his father or his mother __________ (promise) to buy him a computer already．