问题
选择题
运用化学知识可以解决遇到的许多问题，下列叙述中，正确的是
A．哥本哈根气候大会讨论的减排目标主要是控制二氧化硫排放
B．家庭可以用明矾将自来水净化成纯净水饮用以保障身体健康
C．用双氧水的稀溶液清洗伤口可以杀菌消毒
D．燃油、电动混合动力汽车出现，提高了燃料的燃烧热
答案
答案：C
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运用化学知识可以解决遇到的许多问题，下列叙述中，正确的是
A．哥本哈根气候大会讨论的减排目标主要是控制二氧化硫排放
B．家庭可以用明矾将自来水净化成纯净水饮用以保障身体健康
C．用双氧水的稀溶液清洗伤口可以杀菌消毒
D．燃油、电动混合动力汽车出现，提高了燃料的燃烧热
答案：C
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| Jimmy 1 in the country (农村) and he loves 2 in the river near his house, but his father gets a job in a big city and he moves (搬到) there 3 his family. Their new house has a garden, but the garden is small. Jimmy 4 very happy. "Is there a river 5 ?" He is asking his mother 6 the first morning. His mother is answering, "No, there isn't, but there is a beautiful park near here and there is a pool in it. We 7 there this afternoon." Jimmy is happy now. After  lunch, Jimmy and his mother go to the park. Jimmy wants 8 near the pool, but there is a sign (标牌) in front of it. His mother reads it to him. "Warning (注意), this pool is dangerous (危险), 367 people have fallen into it (已掉入)." "Jimmy looks into the pool 9 and he says," But I can't 10 them." | |||
| ( )1. A. lives ( )2. A. plays ( )3. A. and ( )4. A. isn't ( )5. A. near here ( )6. A. on ( )7. A. is going ( )8. A. to walk ( )9. A. care ( )10. A. look | B. living B. playing B. or B. doesn't B. ne ar to here B. in B. are going B. walk B. careful B. see | C. live C. play C. with C. is C. here near C. at C. go C. walking C. carefully C. look for | D. to live D. playes D. to D. not D. here to near D. for D. goes D. walks D. cares D. look at |