8. Generally speaking, one sounds more polite if he/she makes a request ______ a question.

A. in want of　　　 　　　 B. in memory of　　　　　 C. in favor of　 　　　　　 D. in form of

7. The loss caused by the latest typhoon Parma couldn’t be ______ accurately, but it is believed to have reached billions.

A. considered　　　　　　　　 B. controlled　　　　　　　　 C. calculated　　　　　　　 D. completed

6. The Nobel Physics Prize was announced, _____ three scientists for two discoveries that have greatly changed modern life.

A. honoring　 　　　　　　　 B. honored　　　　　　　　　 C. honor　　　　　　　 D. to honor

5. Life is like a long race where we compete with others to go ______ ourselves.

A. within　　　　　　　　　　　　 B. over　　　　　　　　　　　　 C. through　　　　　　　　　 D. beyond　　　

4. Kids in Moziqiao Primary School were so excited _____ they got the news that an American exchange delegation would visit their school.

A. where　　　　　　　　　　　　 B. that　　　　　 　 C. when　　　　　　　　　　　 D. why

3. This camera is of good quality. If it ______ break down within the first year, we would repair it at our expense.

A. would　　　　　　　　 　　　 B. should　　　　　　　　　　 C. could　　　　　　　　　　　 D. might

2. --- Sorry, Linda! I have to _______ now. Mum is calling me for supper.

---Ok, I’ll call back later. Enjoy your supper.　

A. hang up　　　　　　　 B. break up　　　　　　　　 C. give up　　　　　　　　　　 D. hold up

第一节　 单项填空(共20小题；每小题1分，满分20分)

从A, B, C, D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

1. Panama,____ country in Central America, is the only place in the world ____ someone can see the sun rise on the Pacific Ocean and set on the Atlantic.

A. the, in what　　　　　　　　 B. a, where　　　　　　　　　 C. /, where　　　　　　　　　 D. a, which

29、(共11分)

(1)1︰1 (2分)

(2)① AC　 (2分)　

② = (2分)；由电荷守恒可得：c (Na⁺)+ c (H⁺) = c(OH^-)+ c(A^－)，因为c (H⁺) = 　c(OH^-)， 所以c (Na⁺) = c(A^－) (2分)

(3)ABC (3分)(少一个答案扣1分，选错不给分)

28、(共17分)

(1)第三周期VIIA族(2分)

(2)Na⁺[︰H ]^- 　(2分)　　 H-O-Cl(2分)

(3)NaOH (aq) + HCl (aq)= H₂O(l) +NaCl(aq) ；△H=-100Q kJ / mol(3分)

(4)3 H₂O₂ + 6 Fe²⁺ = 2Fe(OH)₃↓+ 4Fe³⁺(3分)

(5)试剂：H₂O(1分)

　　　　 实验步骤：在二烧杯中加入等量蒸馏水，再分别加入少量的Na块、铝片。(2分)

　　　　 现象：Na 与水剧烈反应产生气体 ，铝与水无明显现象。(2分)

　　　 (合理的都给分)