问题 单项选择题

头晕而胀,烦躁易怒,舌红,脉弦数属于()

A.肝火上炎

B.肝阳上亢

C.肝肾阴虚

D.肝胆湿热

E.肝火犯胃

答案

参考答案:A

问答题

逻辑推理是化学学习常用的思维方法.某校研究性学习小组在做“寻找新的催化剂”课题时,发现将生锈的铁钉放到过氧化氢溶液中,也可以加快过氧化氢的分解速率.于是,他们对此展开探究:

(1)提出问题:什么物质是该反应催化剂?

(2)设猜想与假设:下面是组内两位同学所作的猜想,请你完成小华的猜想.

假设一:小芳同学:铁钉表面的氧化铁是H202溶液分解反应的催化剂.

假设二:小华同学:铁钉里的______是H202溶液分解反应的催化剂.

(3)实验与结论:

实验操作

实验现象

实验结论

实验Ⅰ:把一定质量的氧化铁粉末加入到装有10 mL5%的过氧化氢溶液的试管中,并用一根带火星的小木条置于试管口,观察现象.

______

反应的化学方程式为:______

假设一成立

实验Ⅱ:取10 mL5%的过氧化氢溶液于另一支试管中,加入______,并用一根带火星的小木条置于试管口,观察现象.

无现象

假设二______

(填“成立”或“不成立”)

(4)讨论交流:

同学们讨论后认为,小芳的“实验I”还不能够确切的说明氧化铁就是过氧化氢分解制取氧

气的催化剂,理由是:______.

请你设计实验(写出实验步骤、实验现象及结论)证明其中的某一点理由:______.

(5)反思与评价:

小强通过仔细观察发现“实验Ⅱ”中一直没有现象的试管,过了一段时间后试管中也出现了气体,小强觉得很奇怪,你能猜想其中的原因吗?______.

单项选择题

The most thoroughly studied intellectuals in the history of the New World are the ministers and political leaders of seventeenth-century New England. According to the standard history of American philosophy, nowhere else in colonial America was “so much importance attached to intellectual pursuits.” According to many books and articles, New England’s leaders established the basic themes and preoccupations of an unfolding, dominant Puritan tradition in American intellectual life.

To take this approach to the New Englanders normally means to start with the Puritans’ theological innovations and their distinctive ideas about the church—important subjects that we may not neglect. But in keeping with our examination of southern intellectual life, we may consider the original Puritans as carriers of European culture, adjusting to New World circumstances. The New England colonies were the scenes of important episodes in the pursuit of widely understood ideals of civility and virtuosity.

The early settlers of Massachusetts Bay included men of impressive education and influence in England. Besides the ninety or so learned ministers who came to Massachusetts churches in the decade after 1629, there were political leaders like John Winthrop, an educated gentleman, lawyer, and official of the Crown before he journeyed to Boston. These men wrote and published extensively, reaching both New World and Old World audiences, and giving New England an atmosphere of intellectual earnestness.

We should not forget, however, that most New Englanders were less well educated. While few crafts men or farmers, let alone dependents and servants, left literary compositions to be analyzed, it is obvious that their views were less fully intellectualized. Their thinking often had a traditional superstitious quality. A tailor named John Dane, who emigrated in the late 1630s, left an account of his reasons for leaving England that is filled with signs. Sexual confusion, economic frustrations, and religious hope—all came together in a decisive moment when he opened the Bible, told bas father that the first line he saw would settle his fate, and read the magical words: "Come out from among them, touch no unclean thing, and I will be your God and you shall be my people." One wonders what Dane thought of the careful sermons explaining the Bible that he heard in Puritan churches.

Meanwhile, many settlers had slighter religious commitments than Dane’s, as one clergyman learned in confronting folk along the coast who mocked that they had not come to the New World fur religion. "Our main end was to catch fish.

The author holds that in the seventeenth-century New England ()

A. Puritan tradition dominated political life

B. intellectual interests were encouraged

C. politics benefited much from intellectual endeavors

D. intellectual pursuits enjoyed a liberal environment