有关胆石症，哪项是正确的（）
A.肝内胆管结石，右肝管多于左肝管
B.胆囊结石多为胆固醇结石或混合性结石
C.胆色素结石的剖面，中心是放射状而外周呈层状
D.胆道蛔虫所致的结石多为混合性结石
E.肝外胆管结石占全部胆石的10%，多位于肝总管或胆管上段
参考答案：B
解析：胆石按化学成分可分为：胆固醇结石、胆色素结石和混合性结石，在我国各种胆石症中多为胆固醇结石。胆道蛔虫所致的结石多为胆色素结石。胆色素结石的剖面，呈层状而无核心；混合性结石剖面，中心是放射状而外周呈层状。肝内胆管结石的好发部位是左肝管多于右肝管。肝外胆管结石占全部胆石的20%～30%，多位于胆总管下段。
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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 | |