可引起膀胱癌的毒物为（）。 A.联苯胺 B.氯甲醚 C.砷 D.氯乙烯 E.铬酸盐

根据短文内容用所给单词的正确形式填空。

     Erik was a fourteen-year-old boy. He thought he was a young man but his parents didn't think so. They told him, “When you begin to think about _____l_____(help)  others,  you’ll be a young man.

     One morning, his parents gave Erik some money to buy hamburgers at a

store. He saw an old man there. The man looked very______2_____(tire).

Erik went up to him and knew that the old man had lost his money and hadn't had________3_______ (something) for his breakfast. Erik took the old man to the nearest restaurant. But the man asked only a glass of water for sorry for him, so he asked _____4______ (he). Erik felt waiter to bring the man some bread and a cup of coffee. The old man was so hungry that he ate up all the

food very soom. After that, the man told Erik chat he____5____ (will) never forget his kindness. Erik was Very pleased when he heard the old man" say, " You are a very good young man. " To their surprise, the food was a present

because that  day was the birthday of the boss.

1._______ 2.________ 3.________ 4._________ 5._________

女性，35岁。进食肉饼炖蛋后上腹痛3小时就诊，伴恶心、呕吐，疼痛呈持续性、刀割样。化验血白细胞14×10⁹/L（14000/mm³），中性粒细胞0.82（82%），血清淀粉酶200U（Somogyi法），疑为胰腺炎，下列哪一项检查对诊断最有意义（）。

A.急诊胃镜检查

B.胆系B型超声检查

C.腹部X线透视

D.立即复查血淀粉酶

E.5h后复查血淀粉酶

患儿，女，2岁，晨起时发现患儿面部和胸背部有大小不等的出血点。近3个月来，患儿多汗，食欲缺乏，偶有腹泻，3周以前曾复种麻疹疫苗。面色稍苍白，肝脾淋巴结不大，RBC3.8×10¹²/L，Hb99g/L，MCV79fl，WBC5.1×10⁹/L，分类无异常，血小板19×10⁹/L。初步诊断应首先考虑（）

A.再生障碍性贫血

B.白血病

C.免疫血小板减少症合并营养性缺铁性贫血

D.免疫血小板减少症合并大细胞性贫血

E.骨髓异常增生综合征

编辑的决策按层次可分为三种（）、战术决策和战役决策。

校园地国家助学贷款是否适用于在校期间有挂科现象的学生？（）

A.是

B.否

C.不确定