问题
单项选择题
壶腹周围癌的预后较胰头癌好的原因是（）
A.肿瘤位于肠腔易发生消化道出血，促使患者及早就医
B.肿瘤位于十二指肠肠腔内，不易向周围侵犯
C.黄疸出现较早可促使患者及早就医
D.肿瘤的恶性程度较低
E.由于切除十二指肠较单纯切除胰头容易，术后并发症少
答案
参考答案：D
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壶腹周围癌的预后较胰头癌好的原因是（）
A.肿瘤位于肠腔易发生消化道出血，促使患者及早就医
B.肿瘤位于十二指肠肠腔内，不易向周围侵犯
C.黄疸出现较早可促使患者及早就医
D.肿瘤的恶性程度较低
E.由于切除十二指肠较单纯切除胰头容易，术后并发症少
参考答案：D
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| I go on a trip to Thailand (泰国) with my parents this year, because there are lots of elephants there, and my favorite animal is the elephant. I like elephants very 1 . Elephants are 2 than other living animals on land (陆地). We can sit on their backs (背). It's very cool. Elephants can eat a lot of 3 in a day. My father tells me elephants can live 60 to 70 4 . They can 5 walk in the mud (泥). Elephants are big but they can go quickly. We know elephants have large ears. And elephants grow large 6 . We call them tusks. |
| ( )1. A. much ( )2. A. big ( )3. A. meat ( )4. A. months ( )5. A. easy ( )6. A. tooth | B. many B. bigger B. water B. days B. easier B. tooths | C. more C. more big C. animal C. weeks C. easily C. teeth | D. most D. much big D. grass D. years D. easiest D. teeths |