患者男性，18岁。暑假到海边旅游，返校后次日，突起腹泻，一天20余次，无明显腹痛，查体：体温36.5℃，血压75/50mmHg。大便镜检：水样便，未发现红白细胞。首先应做哪项检查以协助诊断( )
A. 血常规检查
B. 血培养
C. 大便涂片染色检查
D. 大便培养
E. 大便悬滴检查
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Mike: Can I get you a cup of coffeeTom:______
A. I don' t take sugar, thank you.
B. That' s very nice of you.
C. You can, please.
D. Thank you for the coffee.
W: How did your interview goM:______
A manager interviewed me.
B. I couldn' t feel better about it ! The questions were very fair, and I seemed to find answers for all of them.
C. I was fully confident that I answered all the questions to the needs of the interviewer.
D. I answered all the questions of the interviewer to his satisfaction. But he may discriminate against me.
在思想理论建设中必须坚持解决思想问题与解决（）相结合的原则。
A. 实际问题
B. 生活问题
C. 认识问题
D. 组织问题
以下程序的结果是______。 main() { char x=3，y=6，z； z=x^＜＜2； printf("%d"，z)； }
A. 25
B. 26
C. 27
D. 28
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