题目

面包是我们的日常食物之一，松软的面包有赖于发酵粉的功劳，厨房中的下列物质可用来发酵面包的是A.花生油 B.白砂糖 C.白醋 D.小苏打 答案：【答案】D【解析】发酵粉使面包变松软的原理是：在缺氧的酸性环境下产生二氧化碳。酸性环境下产生二氧化碳的物质是小苏打(碳酸氢钠)，花生油属于油脂不能和酸反应生成二氧化碳，白砂糖与酸不反应，白醋主要成分为醋酸属于酸，都不能和酸反应生成二氧化碳，故选：D。根据句意写单词（每题0.5分，共10分）1 The students are busy _______(复习)for the exam.2 He had got full marks and the teachers were ___________(满意) with him..3 If you get up early, try not to _________(打扰)your neighbours..4 My mother has worked in this company since she left ______(大学).5 Do you know who ________(发现)America?6 Keeping _________(日记)can help you remember things well.7 I’d like to find someone to talk about their strange _________(行为).8 Mr Wu always spends lots of time _______(解释)things to us.9 The doctor ________(建议)my father to give up smoking three years ago.10 Suzy brought ___________(气球)of all colours..11 We held the 29th Olympic Games _________(成功)in 2008.12 The _______(领导)of our school are all hard-working.13 There is a lot of information ________(可获得的)here. Anyone can get some if he needs.14 He was careless enough to make so many ________(错误).15 It’s said that we will be _________(分开)into 2 groups.16 People all over the world love ________(和平）.17 –What do you think of Simon? ----He is very _________ because he never shows off in front of others.18 I asked him to help me with the work, but he _______.19 There is something wrong with my computer. I will have it _________ this afternoon.20 Nobody is _________ to smoke here because the sign says “No Smoking”.