顶板卷材防水层上的细石混凝土保护层厚度不应小于()。A．40mm B．50mm C．

高血压患者血压200／180mmHg，出现昏迷、抽搐。

应首选下列哪种药物治疗（）。

A.硝苯地平

B.美托洛尔

C.可乐定

D.硝普钠

E.氯沙坦

下列各句中，加粗的成语使用恰当的一项是[ ]

A. 随着政策调控退避三舍，观望氛围日趋浓厚，房价开始松动，这恰是青年置业者打破僵局，购房的最佳机遇。

B. 随着高速公路穿行在这道绿色走廊，饱览秦巴美景、品味田园风情，令人仿佛置身于充满诗意的显山露水中。

C. 景德镇市一辆公交车上上演让人气愤的一幕，一位老人不慎摔倒，可身旁一位有座小伙对此竟然充耳不闻。

D. 对商家喋喋不休和连篇累牍的关于产品科技、物理方面的性能、指标的竭力鼓噪，多数消费者仍保持清醒。

仪表管路中如果采用镀锌水煤气管作为导压管时，管路的连接方式多采用（）。

A．气焊焊接

B．电焊焊接

C．螺纹扣活接头连接

D．卡套接头连接

People with bigger brains tend to score higher on standardized tests of intelligence, according to new study findings.

However, Dr. Michael A.McDaniel emphasized that these findings represent a general trend, and people with small heads should not automatically believe they are less intelligent. For instance, Albert Einstein’s brain was “ not particularly large,” McDaniel noted “ There’s some relationship between brain size and intelligence on average, but there’s plenty of room for exceptions,” he said.

Interest in the relationship between brain size and intelligence grew in the 1830s, when German anantomist(解剖学家)Frederick Tidemann wrote that he believed there was “ a natural connection between the size of the brain and the mental energy displayed by the individual man.” Since that statement, scientists have conducted numerous studies to determine if Tidemann’s idea was , in fact, correct. Most studies have investigated the link between head size and intelligence .More recently, however, researchers have published additional studies on intelligence and brain size, measure using MRI scans.

For his study, McDaniel analyzed more than 20 studies that investigated the relationship between brain size and intelligence in a total of 1,530 people. The studies showed that on average, people with larger brain volume tended to be more intelligent. The relationship was stronger in women that men, and adults than children ,McDaniel noted.

In an interview, McDaniel noted that he’s not sure why the relationship was stronger for adults and women. Previous research has shown that women, on average, tend to have smaller brains that men, but score just as well--- if not higher--- in tests of intelligence he said.

McDaniel insisted that the relationship between brain size and intelligence is not a “perfect” one. “One can certainly find lots of examples of smaller-brained people who are highly intelligent,” he said” But , on average, the relationship holds.”

73．What does the passage mainly tell us?

A．The success of using MRI scans for studies on man’s intelligence.

B．On average bigger brains mean higher IQ.

C．The importance of our brain volume.

D．Dr. Michael succeeded in his studies on man’s intelligence.

74．By mentioning Albert Einstein, the writer wanted to show ___.

A．what Albert Einstein achieved had nothing to do with his brain size

B．probably the studies on man’s intelligence are not worth believing

C．why hard working is more important than intelligence.

D．the results of these studies are not true for everyone

75．The underlined word “investigated “ could be replaced by ____.

A．worked our   B．guessed        C．study    D．imagined