教育科学研究的基本原则是（）。 A.发展性原则 B.客观性原则 C.系统性原则 D.

⑴下列物质：①熔融氯化钠 ②盐酸 ③纯醋酸(CH₃COOH) ④碳酸钙 ⑤酒精 ⑥二氧化碳 ⑦硫酸氢钠固体 ⑧铜 ⑨碳酸氢钠固体⑩氢氧化钡溶液，属于电解质的是         ， 属于非电解质的是         ，能导电的是          。（用序号填空）

⑵写出物质③和⑨在水中反应的离子方程式：                  。

⑶将物质⑦配制成溶液，逐滴滴入⑩中至Ba²⁺恰好沉淀完全，写出离子方程式：              。

下述哪项不是肺炎链球菌肺炎的并发症（）

A.机化性肺炎

B.风湿性心肌炎

C.急性浆液纤维蛋白性胸膜炎

D.败血症

E.化脓性心包炎

Your name made you do it, though unconsciously, suggests new research that finds your name can negatively make you achieve less. Psychologists at Yale and the University of California, San Diego studying the unconscious influence of names say a preference for our own names and initials — the “name-letter effect” — can have some negative consequences.

Students whose names begin with C or D get lower grades than those whose names begin with A or B; major league baseball players whose first or last names began with K (the strikeout-signifying letter) are significantly more likely to strike out.

Assistant professors Leif Nelson of UCSD and Joseph Simmons of Yale have conducted five studies over five years using information from thousands of individuals.

“The conscious process is baseball players want to get a hit and students want to get A's,” Nelson says. “So if you get a change in performance consistent with the name-letter effect, it clearly shows there must be some unconscious desire operating in the other direction.”

The researchers' work supports a series of studies published since 2002 that have found the “name-letter effect” causes people to make life choices based on names that resemble their own. Those studies by Brett Pelham, an associate professor at SUNY University, have found that people are disproportionately（不定比例地）likely to live in states or cities resembling their names, have careers that resemble their names and even marry those whose surnames begin with the same letter as their own.

The twist, Pelham says, is that he has believed the name-letter effect would apply only to positive outcomes. Nelson and Simmons, he says, are “showing it applies more so to negative things than positive things.”

The researchers say the effect is definitely more than coincidence but is small nevertheless. “I know plenty of Chrises and Davids who have done very well in school,” Simmons says.

小题1:The new research is mainly about the relationship between one’s ______.

A．name and unconsciousness

B．name and characteristics

C．name and success

D．sports and school achievements小题2:Who may serve as an example to show the “name-letter effect”?

A．Miss Smith working as a lawyer.

B．Charles Brown married to Sue Rogers.

C．Mr. Watt living in Washington

D．Paula Snow fond of the color white.小题3:Which can be used to explain the underlined word “twist” in the last but one paragraph?

A．Difference．

B．Conclusion．

C．Funny side．

D．Shared part．小题4:The last paragraph mainly tells us that the “name-letter effect” ______.                

A．isn’t believed in by many people

B．doesn’t work with certain names

C．may not really exist

D．is often too small to show

常温下，向15 mol·L^-1的HNO₃溶液中加入下列物质，反应速率最快，现象最明显的是（   ）

A．Al

B．Cu

C．Fe

D．C

肺痈的发病原因是（）

A.感受风湿

B.情志所伤

C.感受风热

D.正气内虚

E.痰热素盛