设集合P={3，log2a}，Q={a，b}，若P∩Q={0}，则P∪Q=[ ] 发布时间：2017-04-05 07:18 │ 来源：www.tikuol.com 题型：选择题 问题： 设集合P={3，log2a}，Q={a，b}，若P∩Q={0}，则P∪Q=[ ]A．{3，0}B．{3，0，1}C．{3，0，2}D．{3，0，1，2}
题型：选择题 某公司一次性出资240万元投资——固定资产项目，预计该固定资产投资项目投资当年可获净利40万元，第2年开始每年递增5万元，投资项目有效期8年并按直线法计提折旧(不考虑净残值)。该投资项目的投资回收期为( )年。A．3.18B．6C．3.43D．4.16 查看答案
题型：选择题 完形填空。 I grew up poor, living with my wonderful mother. We had little money but plenty of love and attention. I was 1 and energetic. I understood that no matter how poor a person was, he could still 2 a dream.My dream was to be a sportsman. 3 I was sixteen, I had started playing baseball. I could throw a ninety-mile-per-hour fastball and hit anything that moved on the football field. I was also 4 : my high-school coach was Ollie Jarvis, who not only believed in me, but taught me 5 to believe in myself. He 6 me the difference between having a dream and realizing the dream. One particular 7 with Coach Jarvis changed my life forever. It was the summer between my junior and senior years, and a friend recommended (推荐) me for a summer job. This meant a chance for money in my pocket-money for a new bike and new clothes, and the 8 of savings for a house for my mother. Then I realized I would have to 9 summer baseball to deal with the work schedule, and that meant I would have to tell Coach Jarvis I wouldn't be playing. When I told Coach Jarvis, he was as 10 as I expected him to be. "You have your whole life to work," he said. "Your playing days are limited. You can't 11 to waste them." I stood before him with my head hanging, trying to think of the 12 that would explain 13 him why my dream of buying my mom a house and having money in my pocket was worth facing his 14 in me. "How much are you going to make at this job, son?" he asked. "Three twenty-five an hour," I replied. "Well," he asked, "is $3.25 an hour the 15 of a dream?" That simple question made it 16 to me the difference between 17 something right now and following a dream. I 18 myself to sports that summer, and within the year I was 19 by the Pittsburgh Pirates to play baseball, and was 20 a $20,000 contract. In 2000, I bought my mother the house of my dream!( )1. A. happy ( )2. A. lose ( )3. A. By the time( )4. A. right ( )5. A. how ( )6. A. gave ( )7. A. accident ( )8. A. aim ( )9. A. keep up ( )10. A. mad ( )11. A. adopt ( )12. A. answers ( )13. A. for ( )14. A. sadness ( )15. A. source ( )16. A. direct ( )17. A. wanting ( )18. A. provided( )19. A. worked ( )20 A. paid B. polite B. have B. The time B. popular B. why B. taught B. matter B. idea B. put up B. happy B. afford B. excuses B. to B. regret B. prize B. clear B. changing B. devoted B. mentioned B. got C. shy C. make C. At one time C. lucky C. when C. brought C. problem C. start C. give up C. frightened C. affect C. words C. on C. hopelessness C. price C. clean C. dreaming C. headed C. fired C. offered D. honest D. need D. At a time D. confident D. whether D. asked D. experience D. purpose D. pick up D. shameful D. effect D. ways D. in D. disappointment D. allowance D. straight D. choosing D. imagined D. hired D. signed 查看答案