正确答案: C

血钙升高，血磷降低

题目：甲状旁腺激素的作用是（ ）

解析：C

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举一反三的答案和解析：

[单选题]The word "high" means______.

drunk

解析：

此题为词汇题。根据语境可以判断出high一词的意思是喝酒喝“高”了。

[单选题]首先提出毛泽东思想这一科学概念的是( )

王稼祥

解析：C【解析】本题属于识记题，要准确记忆。首先提出“毛泽东思想”这一科学概念的是王稼祥，故选“C”。

[单选题]For the second time, the man's head was hit by______.

the pulley

解析：

此题为细节题。见文章第三段内句子When he reached the top，his head hit the pulley。

[单选题]Passage OneMark went to the neighborhood meeting after work. The area's city councilwoman (女议员) was leading a discussion about how the quality of life was decreasing. The neighborhood faced many problems. People were supposed to suggest solutions to the councilwoman. It was too much for Mark. "The problems are too big," he thought. He turned to the man next to him and said, "I think this is a waste of my time. Nothing I could do would make a difference here."

he was not in the position to solve such problems

解析：

31．答案为C  从第一段最后一句可知Mark的态度是漠不关心，因此C为正确答案。

[单选题]

breakfast

解析：22．后面提到中餐、晚餐，这里肯定是早餐。选项 C是正确的。

[单选题]胃肠减压管拔除指征是 （ ）

肠鸣音存在、肛门排气

[单选题]The main idea of paragraph 4 shows us______.

some examples of shooting in the US schools.

解析：

43．答案为A  第四段是校园枪击案的实例列举，因此选A。