正确答案:

题目：男性，55岁，风湿性心脏瓣膜病史30年。近2天来清晨洗漱时即感呼吸困难，日常活动明显受限。其心功能分级为

解析：C

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学习资料的答案和解析：

[单选题]第 7 题 实施素质教育的根本宗旨是（　　）

提高国民素质

[单选题]I found him ______on the ground.

lying

解析：

11．答案为B  我发现他躺在地上。find表示“感观，察觉”时，加现在分词表示发现正在做某事。

[单选题]______ many times, but he still couldn't understand it.

He was told

[单选题]In England，which of the following greetings are more likely to be heard?

What a beautiful day!

解析：见文章第四自然段第一句“The overseas visitors may be excused for showing surprise at the number of references to weather that the English make to each other in the…，”可知他们谈论的最主要话题还是天气。