金属表面的涂层保护，经济而有效的覆盖层是（）。 A.化学表面覆盖层 B.涂料覆盖层 发布时间：2017-08-26 10:54 │ 来源：www.tikuol.com 题型：单项选择题 问题： 金属表面的涂层保护，经济而有效的覆盖层是（）。A.化学表面覆盖层B.涂料覆盖层C.金属覆盖层
题型：单项选择题 完形填空 I think Shanghai is a wonderful place to go to. Do you 1 with me? I have fallen in love with Shanghai since I 2 to the city last year, especially the people who I meet and the exciting events 3 take place every day. 4 it might be a little crowded, spending time with young and 5 students at school is the most exciting experience for me. Shanghai is 6 very quickly. It is getting bigger and better. People come from all over the world for the great events here. 7 the ATP tennis to super junior concerts, from the snooker (斯诺克) masters to Peking Opera - Shanghai has something special for 8 . The year of 2010 just might be Shanghai's best year ever. Experts (专家) say that more than 70 million 9 will come here for the World Expo. People and events - they are what I love about this city! I wouldn't like to stay 10 except at Shanghai in 2010. It's full of things for us to enjoy!( )1. A. worry ( )2. A. left ( )3. A. that ( )4. A. Because ( )5. A. slow ( )6. A. running ( )7. A. Across ( )8. A. someone ( )9. A. teachers ( )10.A. somewhere B. agree B. moved B. where B. AlthoughB. silly B. becoming B. BetweenB. nobody B. leaders B. anywhereC. argue C. visitedC. when C. If C. lazyC. developingC. Since C. everybodyC. workers C. everywhere D. deal D. joined D. who D. Unless D. active D. increasing D. From D. none D. tourists D. nowhere 查看答案
题型：单项选择题 生态学是( )。A．研究植物、动物与环境之间相互关系的科学B．研究植物、动物相对于自然与生物环境关系的科学C．研究生物与生存环境相互关系的科学D．研究生物与非生物环境之间的相互关系的科学 查看答案