题目

生活中处处有化学，下列说法正确的是（   ） A．铁锅不能燃烧           B．乙醇汽油属于混合物 C．油锅着火用水扑灭       D．可用打火机检查天然气是否泄漏 答案：BThe power of encouragement is great. You may draw some inspiration from the following story. Dante Gabriel Rossetti, a famous 19th-century poet and artist, was once ______ by an elderly man. The old man had some sketches (素描) and drawings that he______ Rossetti to look at and tell him if they were any good, or if they at least showed ______ talent. Rossetti looked them ______ carefully. After the first few, he knew that they were worthless, showing not the least______ of artistic talent. But Rossetti was a _____ man, and he told the elderly man as gently as possible that the pictures were of little _____ and showed little talent. He was sorry, but he could not _____ to the man. The visitor was _____ , but seemed to expect Rossetti’s _____. He then apologized for _____ Rossetti’s time, but would he just _____ a few more drawings—these done by a(n) _____art student? Rossetti looked over the _____batch (一批) of sketches and immediately became enthusiastic over the talent they _____. “These,” he said, “oh, these are good. This young student has great talent. He should be given every _____ and encouragement in his career as an artist. He has a _____ future if he will work and stick to it.” Rossetti could see that the old man was _____moved. “Who is this fine young artist?” he asked. “Your son?” “No.” said the old man sadly. “It was I who painted the pictures 40 years ago. _____I had heard your praise then! For you see, I got discouraged and_____drawing—too soon.”1.A. helpedB. visited C. respected D. requested 2.A. hopedB. made C. hadD. wanted 3.A. potentialB. commercial C. officialD. spiritual 4.A. up B. on C. overD. down 5.A. signB. mark C. chanceD. view 6.A. rudeB. kind C. talentedD. creative 7.A. helpB. price C. valueD. quality 8.A. speakB. apologizeC. listenD. lie 9.A. disappointedB. annoyedC. delightedD. puzzled 10.A. achievement B. developmentC. statementD. judgment 11.A. taking upB. turning upC. making upD. looking up 12.A. aim atB. glare at C. look atD. stare at 13.A. oldB. youngC. famousD. talented 14.A. firstB. secondC. thirdD. last15.A. reviewedB. exposedC. showedD. rejected 16.A. helpB. time C. chanceD. work 17.A. charming B. surprising C. promisingD. touching18.A. slightly B. smoothly C. simplyD. deeply 19.A. If onlyB. Only if C. Now thatD. As long as 20.A. insisted on B. gave up C. headed toD. led to