题目

化学用语是学习化学的重要工具。下列化学用语及其表述正确的是() A . :氢氧化铝中铝元素的化合价为+3价 B . mg:镁元素符号 C . Fe3+:一个亚铁离子带三个单位正电荷 D . Cl2:两个氯原子 答案:AI spent two months with an American family last year when I studied in America.   It is said, “The best house is in the USA, the best wife is in Japan, and the best food is in China.” So I take ____1____ and pleasure to ____2____ “the best food” for my American family. Each day I perform (表演) my play in ____3____ way: changing the dishes colour, the meat's type or the soup's (汤) style (风味). ____4____, my American friends can discover the ____5____ of eating Chinese food. Because of my ____6____ job, I'm ____7____ rewarded by their ____8____ of appreciation: “excellent”.   But the joke is here, yesterday, I cooked Sichuan-style ____9____ for dinner. I was ____10____ by my achievement. ( )1. A. worry        B. attention        C. delight            D. pride ( )2. A. buy         B. fetch           C. cook              D. leave ( )3. A. their          B. a new          C. the same           D. a simple ( )4. A. Thus         B. Suddenly       C. For this            D. However ( )5. A. way         B. joy            C. trouble            D. importance ( )6. A. hard          B. daily            C. good              D. new ( )7. A. soon          B. hardly          C. quickly           D. often ( )8. A. expressions    B. sentences       C. actions           D. habits ( )9. A. meat          B. fish           C. soup             D. egg ( )10. A. praised       B. pleased          C. astonished         D. surprised  
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