右心衰竭A．肺性发绀B．淤血性周围性发绀C．混合性发绀D．血液中

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问题单项选择题

右心衰竭

A．肺性发绀
B．淤血性周围性发绀
C．混合性发绀
D．血液中存在异常血红蛋白衍生物引起的发绀
E．缺血性周围性发绀
下列疾病常引起哪种类型的发绀

答案

参考答案：B

选择题

The water in the lakes and rivers in Shandong becomes ______ because of the dry weather .

A. less and less B. more and more C. fewer and fewer

选择题

There are few _____ in the fridge. Let's go and buy some peas and carrots.[ ]

A. meat

B. fruit

C. vegetables

D. bread