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1．下列詞語中加點的字，每對讀音都不相同的一組是(3分)　　　　　　　　　　　　　　　 ( 　　)

　　　 A．著陸/著筆　　　　　 殷紅/殷實　　　　　　　　 　 血本無歸/一針見血

　　　 B．省心/省親　　　　　 沉沒/沒世　　　　　　　　 　 埋怨/埋葬

　　　 C．抹黑/抹墻　　　　　 落枕/落色　　　　　　　　 　 雋永/雋秀

　　　 D．和弄/和詩　　　　　 椎心泣血/脊椎　　　　　 　 薄餅/薄情

4、保護土地資源，是每個公民應盡義務，也是造福子孫后代的需要。

Dear Li Hua,

How are you? With this letter I'd like to introduce my hometown-Jiangsu Province to you．

3、人們正認識到保護耕地的重要性，政府積極采取措施禁止非法用地。

2、隨著經濟的發展和人口的增長，越來越多的良田被征用來建造住房和工廠。耕地面積逐年減少。

1、江蘇是我國經濟發達的省份之一，位于我國的東部，人口多，耕地少。

人口：7000多萬；土地面積：10多萬平方公里。自然資源貧乏。

69.Which of the following is NOT mentioned as an environmental factor that affects IQ 　　　.

　　　 A．Good nutrition．　　　　　　　　　　　　　　　　 B．Improved technology.

　　　 C．Better education．　　　　　　　　　　　　　　　 D．Food pollution.

68.The author is in favor of _____________ according to the passage.

　　　 A．putting retarded children into institutions

　　　 B．providing early childhood education programs

　　　 C．keeping children in orphanages

　　　 D．keeping retarded children with others like themselves

67.What's the main idea of this passage

　　　 A．Retarded children cannot improve their IQ's.

　　　 B．Orphanages are full of mentally retarded children.

　　　 C．Environmental factors influence a child's IQ.

　　　 D．Early childhood education programs are important.

66．What did they these teenagers learn from the journey?

　　　 A．It was high time that people protected the environment.

　　　 B．Long journey was not suitable for school children.

　　　 C．It should take the whole world to help the children.

　　　 D．Environmental problems can be solved if school children take part.

D

　　　 How much can environment affect intelligence? In one study, striking increases in IQ occurred

in 25 children who were moved from an orphanage(孤兒院) to more stimulating(使人興奮的，使人振奮的) environments．The children, who were all considered mentally retarded and unadoptable, were moved to an institution where they received personal attention from adults．Later, these supposedly retarded children were adopted by parents who gave them love, a family ,and a stimulating home environment．The children gained an average of 29 IQ points．For one child, the increase was an amazing 58 points．A second group of initially less "retarded" children, who stayed in the orphanage, lost an average of 26 IQ points.

　　　 Other encouraging results can be found in early childhood education programs, which provide

stimulating intellectual experiences for disadvantaged children．In one study, children from low-income families were given enriched environments from early infancy(嬰兒期) through preschool．By age 2 their IQ scores were already higher than those in a control group．More important, they were still 5 points higher seven years later．High-quality enrichment programs such as Head Start can prevent children from falling behind in school.

　　　 A particularly striking environmental effect is the fact that 14 nations have shown average IQ

gains of from 5 to 25 points during the last 30 years．These IQ boosts, averaging 15 points, occurred in far too short a time for genetics to explain them．It is more likely that the gains reflect environmental forces, such as improved education, nutrition, and living in a technologically complex society.