题目

61. Americans are ready to __________ (招待) foreigners at their homes, share their holidays and their home life. 62. There were so many tourists on the Great Wall that I got s___________ from my friends by the crowd. 63. The teacher often reminds us that we should take our schoolwork s______________, or we will never make any _____________(进步) in our studies. 64. Yesterday I had my wallet __________ (偷) while shopping so I had to walk home. 65. Harry Potter is so popular in the world that it has been t________ into many languages. 66. The ___________ (increase) number of c下列表述正确的是(    )①人造刚玉熔点很高，可用作高级耐火材料，主要成分是二氧化硅  ②化学家采用玛瑙研钵摩擦固体反应物进行无机溶剂合成，玛瑙的主要成分是硅酸盐  ③提前建成的三峡大坝使用了大量水泥，水泥是硅酸盐材料  ④夏天到了，游客佩戴由添加氧化亚铜的二氧化硅玻璃制作的变色眼镜来保护眼睛  ⑤太阳能电池可采用硅材料制作，其应用有利于环保、节能A.①②③               B.②④               C.③④⑤              D.③⑤