急性胰腺炎最早症状特点（）
A.腹胀、便秘
B.休克、烦躁
C.上腹剧痛、频繁呕吐
D.腹肌紧张反跳痛
E.腹痛伴高热
参考答案：C
根据句意，用括号内所给单词的适当形式填空。
1. Who knows the _____ names? (swim)
2. Cats like _____ fish. (eat)
3. I think the fruit shop is _____ now. It's too late. (open)
4. His father often watches football _____ on TV every Sunday. (match)
5. Our classroom is clean. What about _____ ? (they)
免疫是指（）
A.机体识别、杀灭与清除自身突变细胞的功能
B.机体抗感染的过程
C.机体在识别"自己"和"非己"的基础上，排除非己的过程
D.机体耐受的功能
E.机体清除自身衰老、死亡的组织细胞的功能
tches football _____ on TV every Sunday. (match)