问题
单项选择题
水中的悬浮物会吸附金属离子,因而测定金属时往往需要消解,一般的消解方法有四种,在下列各项中,不属于消解法的是()
A.硝酸消解法
B.硝酸-硫酸消解法
C.硝酸-高氯酸消解法
D.干灰化法
E.电炉上煮沸
答案
参考答案:E
水中的悬浮物会吸附金属离子,因而测定金属时往往需要消解,一般的消解方法有四种,在下列各项中,不属于消解法的是()
A.硝酸消解法
B.硝酸-硫酸消解法
C.硝酸-高氯酸消解法
D.干灰化法
E.电炉上煮沸
参考答案:E
完形填空。 | |||
My dad has been driving a truck for almost his entire life. He's usually 1 all the weekdays and comes home only at weekends. Sometimes he stays 2 for two weeks at a time. 3 I don't get to see him as often as I wish, we remain very 4 . My dad is the type of person who doesn't let you 5 up anything that you start. When I was eleven, my father bought me a piano. At first I was so 6 about it that I would spend hours and hours learning how to play. Then it got 7 .I was so tired of it that I asked if I could stop. Much as I tried, he 8 me to go on. Now I have been playing for almost five years. I love it and I'm glad I 9 my dad's advice. My dad is 10 talented,for he has been playing the guitar for over 20 years. Under his influence, I also like 11 now. Sometimes my dad can be my biggest 12 . He makes me smile even when I lose in a talent show 13 sometimes he can be my biggest critic (批评家). He 14 ignore the small mistakes I make. He encourages me never to lose 15 because he thinks that all my efforts will 16 one day. My dad is generous. Every Thursday night, he 17 to read to the children at a children's club. When he reads, their 19 light up with curiosity about what will happen next. I feel 18 of having a person in my family who cares enough to volunteer to 20 . I love dad with all my heart. He's a hero in my heart and the most wonderful person in the world. | |||
( )1. A. on ( )2. A. away ( )3. A. In case ( )4. A. polite ( )5. A. give ( )6. A. nervous ( )7. A. rough ( )8. A. promised ( )9. A. received ( )10. A. physically ( )11. A. composing ( )12. A. director ( )13. A. however ( )14. A. ever ( )15. A. aim ( )16. A. come true ( )17. A. agrees ( )18. A. bodies ( )19. A. jealous ( )20. A. help | B. with B. home B. Even though B. kind B. put B. anxious B. difficult B. persuaded B. challenged B. typically B. dancing B. supporter B. so B. often B. dream B. take risks B. likes B. arms B. optimistic B. read | C. out C. inside C. If only C. different C. take C. crazy C. disappointing C. reminded C. took C. musically C. writing C. scholar C. and C. never C. strength C. pay off C. intends C. hands C. proud C. work | D. in D. alone D. As if D. close D. speed D. familiar D. boring D. suggested D. listened D. exactly D. drawing D. sponsor D. still D. even D. heart D. let out D. offers D. faces D. happy D. drive |