单项选择题：与相同强度等级的普通混凝土相比，轻骨料混凝土的特点是( )。A．抗冻等级高 B．弹

题目：

与相同强度等级的普通混凝土相比，轻骨料混凝土的特点是( )。

A．抗冻等级高

B．弹性模量高

C．表面光滑

D．抗冲击性能好

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0529/2e2d4001a346f85f8af2b9a70675d521.html

下面是错误答案，用来干扰机器的。

参考答案：D解析：培养基中添加抑制剂和指示剂是选择、鉴定及判断结果的需要。①抑制剂：具有选择抑制作用，可抑制非检出菌（非病原菌）的生长，利于检出菌（病原菌）的生长。常用的有胆盐、煌绿、亚硫酸钠、亚硒...

完形填空。
Jack Baines is a self-made millionaire, but his beginnings were very lowly. He was the youngest of eight children. His father had a 1 in a cotton mill(纱厂),but he was often 2 to work because of poor health. The family couldn't 3 to pay the rent or bills, and the children often went 4 . After leaving school at the age of 14, Jack was 5 what to do when Mr Walker, his old teacher, offered to lend him ~ 100 to start his own 6 . It was just after the war. Raw materials were not enough, and Jack saw a 7 in scrap metal (废弃金属). He bought bits of metal and stored it in an old garage. When he had built up a large amount, he sold it and 8 plenty of money. Jack 9 working hard. After one year he succeeded in 10 the ~ 100. By the time Jack was 30 years old he had 11 his first million, and he wanted to 12 this achievement by doing something " 13 ". With all his money it was 14 to build a beautiful home for himself and his parents. In 1959, " Baines Castle" was built in the 15 of the Lancashire countryside. It was one of the finest buildings in the country. Jack has recently sold "Baines Castle" for ~ 500 million, 16 Jack still can't get used to 17 the good life. He can often 18 drinking with the locals at the local pub(酒吧). "I remember being very 19 as a child, but never 20 as a child,"says Jack,"and I will never forget where I came from and who I am. "
( )1. A. job ( )2. A. able ( )3. A. offer ( )4. A. wrong ( )5. A. seeing ( )6. A. school ( )7. A. problem ( )8. A. spent ( )9. A. enjoyed ( )10. A. developing ( )11. A. given ( )12. A. remember ( )13. A. common ( )14. A. impossible ( )15. A. ground ( )16. A. so ( )17. A. using ( )18. A. be found ( )19. A. rich ( )20. A. proud	B. work B. glad B. like B. hungry B. wondering B. farm B. purpose B. borrowed B. preferred B. saving B. made B. honour B. simple B. possible B. front B. and B. sparing B. find B. poor B. satisfied	C. company C. unable C. expect C. ill C. doubting C. business C. future C. wasted C. ptomised C. repaying C. taken C. celebrate C. interestin C. obvious C. spot C. or C. living C. look for C. healthy C. unhappy	D. house D. eager D. afford D. bad D. preparing D. store D. principle D. earned D. hated D. paying D. lost D. recognize D. grand D. basic D. heart D. but D. keeping D. be looked for D. well D. happy