阅读下面短文，掌握其大意，然后从各题所给的A、B、C和D项中选出最佳选项。
Sam was worried. The following morning, he would have art class. It was his favourite class, but there was a ____16____. Sam saw the world differently from everybody else. When he drew, birds had different-sized wings, and buildings had strange shapes. Every time he painted a picture, his teachers and classmates would be ____17____.
It was time for the art class. Nervously, Sam looked at the white piece of paper in front of him.
“ Good morning class, ” said Mr. White. “ Today, we’re going to paint … ”
Sam ____18____, wondering what the next word would be. Please, he thought, not houses. Not buildings …
“ We’re going to paint ____19____” said Mr. White, with a smile.
“ Yes! Great! ” said Sam ____20____.
“ We can’t paint that! ” shouted Mike from the other side of the classroom.
“Sure you can,” replied Mr. White ____21____. “ Think about it, Mike. What makes you happy? ”
“ Umm … beaches, sunshine, and … ice-cream! ” said Mike.
“ Well, there you go. That’s how you paint it. Start working! ” said Mr. White.
Sam was already ____22____. He splashed (泼洒) large amounts of paint all over the ____23____. It was really beautiful! There were shapes that we didn’t have in the real world and the colours were so shining. The whole class ____24____ and Sam looked proud.
From that day on, Sam was never ______25______ about art class. He knew that he could paint happiness, no matter what he painted.
16. A. difference B. problem C. reason D. way
17. A. encouraged B. relaxed C. satisfied D. surprised
18. A. agreed B. replied C. understood D. waited
19. A. buildings B. houses C. happiness D. summer
20. A. excitedly B. carelessly C. kindly D. sadly
21. A. angrily B. patiently C. secretly D. worriedly
22. A. painting B. playing C. talking D. writing
23. A. book B. floor C. paper D. wall
24. A. cheered B. doubted C. finished D. regretted
25. A. careful B. certain C. happy D. nervous
阅读短文，根据上下文和所给的首字母写出所缺单词。注意使用正确形式，每空限填一词。答卷时，要求写出完整单词。
Dunbuang is a historic city in Gansu. In ancient times, Dunhuang was an important c ___46___ of trade. As the Silk Road developed, Dunhuang became China’s western gateway to the world. Here, different cultures met and influenced each other. People from f ___47___ countries did business and communicated with the local people.
If you v ___48___ Dunhuang, you will be able to see the Mogao Caves（莫高窟）. If you walk i ___49___ , you will discover some of the wonderful artworks. There are over 45,000 square metres of beautiful paintings on the cave walls, as well as thousands of statues.
Over the years, China has made great efforts to protect the Mogao Caves. Today, you can also find high-quality photos of the artworks on the Internet. People all over the world now have a c ___50___ to see Dunhuang’s treasures online.
