下列关于队列的叙述中正确的是( )。
A．在队列中只能插入数据
B．在队列小只能删除数据
C．队列是先进先出的线性表
D．队列是先进后出的线性表
参考答案：C
解析： 队列是指允许在一端进行插入、而在另一端进行删除的线性表，允许插入的一端称为队尾，允许删除的一端称为队头，选项A和选项B错误。在队列中，最先插入的元素将最先能够被删除，反之，最后插入的元素将最后才能被删除，所以，队列又称为“先进先出”或“后进后出”的线性表，它体现了“先来先服务”的原则，选项C正确，选项D错误。
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| Anne Frank was born in Germany in 1929. As her family was Jewish, her father found that it was hard for them to continue to live in Germany when the Nazis（纳粹) , who 1 the Jews very much, came into power in 1933. So they 2 to Amsterdam, Netherlands when Anne was only four years old. In May, 1940, the Germans occupied（占领）Neth erlands and the Jews there were 3 to work in certain places.On June 12, 1942, Anne Frank's parents gave her a small red-and-white-plaid diary _4_ her thirteenth birthday present and on July 6, 1942, her family had to go into hiding. Though they could take very few things with them, Anne brought her diary to her new home, which she called “Secret Annex.” For two years when Anne lived in the Annex, she 5 down her thoughts and feelings in her diary. 6 of putting down series of facts 7 most people do, she wrote about her life with the seven other people in hiding, as 8 as the war going on around her and her hopes 9 the future. She 10 her diary her best friend and talked to it about whatever she wanted to. But unfortunately, on August 4, 1944, the Nazis raided（轰炸） the Secret Annex and Anne was arrested（逮捕） and sent to a concentration camp（集中营）, 11 she died in March, 1945. Through thick and thin, Anne’s father got her dairy 12 in June, 1947 by Contact Publishers, a Dutch firm. Today Anne’s Dairy is available 13 fifty-five languages and over 24 million copies have been sold. This page of diary was written on Thursday 15, June, 1944, in which she wrote about her strong love for nature, which she had hardly been able to see face to face since she began to 14 from the Nazis. Afraid of being caught , she 15 go outdoors and had to stay indoors most of the time. On the night of June 15, she stayed awake 16 until half past eleven just in order to take a good look at the moon for once by herself. She remembered another time five months ago when the dark rainy evening, the wind, the thundering clouds 17 her entirely in their 18 . She was so crazy about everything to 19 with nature that she would like to 20 anything for her freedom, but...... | ||||
| ( )1. A. loved ( )2. A. had ( )3. A. forced ( )4. A. for ( )5. A. put ( )6. A. In place ( )7. A. like ( )8. A. long ( )9. A. with ( )10. A. regarded ( )11. A. which ( )12. A. to be published ( )13. A. to ( )14. A. keep away ( )15. A. didn't dare ( )16.A. for purpose ( )17. A. kept ( )18. A. power ( )19. A. join ( )20. A. give in | B. hated B. came B. allowed B. on B. kept B. Beca use B. as B. much B. in B. considered B. there B. published B. with B. hide away B. dare not B. with purpose B. held B. force B. connect B. give up | C. disagreed C. moved C. promised C. as C. went C. In case C. so C. soon C. for C. had C. where C. to publish C. by C. stay behind C. was afraid C. on purpose C. made C. energy C. concern C. give away | D. against D. settled D. had D. like D. turned D. Instead D. with D. well D. about D. knew D. what D. publish D. in D. hold back D. dared not to D. in purpose D. left D. strength D. do D. give out | |