1．(2010全国卷1)下列叙述正确的是

A．Li在氧气中燃烧主要生成

B．将SO₂通入溶液可生成沉淀

C．将CO₂通入次氯酸钙溶液可生成次氯酸

D．将NH₃通入热的CuSO₄溶液中能使Cu²⁺还原成Cu

[解析]A错误，因为Li在空气中燃烧只能生成Li_2­­O,直接取材于第一册课本第二章第三节； B错误，酸性：HCl＞H₂SO₃＞H₂CO₃所以通入后无BaSO₃沉淀，因为BaSO₃+2HCl=BaCl₂+H₂O+SO₂↑；D错误，溶液中该反应难以发生，先是：2NH₃+2H₂O+CuSO₄=Cu(OH)₂↓+(NH₄)₂SO₄,接着Cu(OH)₂CuO+H₂0,溶液中NH₃不能还原CuO为Cu,要还原必须是干燥的固态！C正确，强酸制弱酸，酸性：H₂CO₃＞HClO,反应为：CO₂+H₂0+Ca(ClO)₂=CaCO₃↓+2HClO，直接取材于课本第一册第四章第一节；

[答案]C

[命题意图]考查无机元素及其化合物，如碱金属，氯及其化合物，碳及其化合物，硫及其化合物，氮及其化合物等A、B、C选项直接取材于高一课本，D取材于高二第一章氮族。

[点评]再次印证了以本为本的复习策略，本题四个选项就直接取材于课本，属于简单题，不重视基础，就有可能出错！

12.　 Before receiving their awards last night, John and the nine other Life Savers attended 　(v.) a special reception yesterday 　hosted 　(host) by the Prime Minister.

11.　 There is no doubt 　that 　John’s quick thinking and the first aid skills he learned at school saved 　(v.) Ms Slade’s life. It shows that a knowledge 　(n.) of first aid can make a real difference 　(n.).

10.　 He slowed the bleeding by applying 　pressure 　(press) to the wounds until the police and ambulance (n.) arrived.

9.　　 It was John’s quick action and knowledge of first aid 　that 　saved Ms Slade’s life.

8.　　 She was lying in her front garden 　bleeding 　(bleed) very heavily.

7.　　 John was presented 　with 　his award at a ceremony which recognized the 　bravery 　(brave) of ten people who had saved the life of another.

6.　　 Cover the burned area 　with 　a dry, clean bandage 　(n.) that will not stick 　to 　the skin. Hold the bandage in place 　with 　tape. Never put butter, oil or ointments on burns as they keep the 　heat 　(hot) in the wounds and may cause 　infection 　(infect).

5.　　 Do not rub, 　because / for 　this may break any blisters and the wound 　(n.) may get 　infected 　(infect).

4.　　 For second degree burns, keep cloths cool by 　putting 　(put) them back in the cold water, 　squeezing 　(squeeze) them out and 　placing 　(place) them on the 　burnt / burned 　(burn) area over and over again for about an hour until pain is not so bad.