83. What could be a surprise according to Monday’s report? (No more than 10 words)

82. Who is chief economist for the National Association of Realtors? (No more than 2 words)

　　　 ●Women should not rush to drink alcohol to lose weight.

●For women with weight problems, alcoholic drinks are probably not the 80　 　of extra calories.

SECTION B

Directions: Read the following passage. Answer the questions according to the information given in the passage and the required words limit. Write your answers on your answer sheet.

The unsteady housing market is showing a rare sign of strength: waiting home sales were up significantly in February, a report released Monday said, suggesting that Americans took advantage of a tax credit for home buyers.

Sales rose 8.2 percent in February, the National Association of Realtors(房地产经纪人) said. Analysts had expected sales to stay flat.

Economists said Monday’s data suggested buyers were re-entering the market as the April 30 deadline approached for a government tax credit of up to $8,000. The tax credit drove up sales rapidly in the fall, when it was originally set to end, but it has been slow to push the market this spring.

Lawrence Yun, chief economist for the association, said Monday’s report “may signal the early stages of a second wave of home sales.”

A separate report on Monday showed the service division in the United States was improving, driven in part by gains in employment.

The Institute for Supply Management’s non-manufacturing barometer(晴雨表) rose to 55.4 in March, up from 53 in February, going beyond expectations. Much of the energy came from a rush in new orders and business activity.

It was the highest reading(测量或调查的读数) for the survey since May 2006. While employment rose, it was short of the break-even point, signaling the service division was still losing jobs. Exports also rose significantly.

“This is a very encouraging report, which indicates acceleration in demand growth from both domestic and foreign customers,” Barclays Capital researchers wrote in a note on Monday.

The jump in waiting home sales was a rare bit of good news for the housing market, which remains in a deep rut(车辙). Home prices have shown little change.

Analysts expect the housing market to gradually improve as unemployment becomes less and the broader recovery gains steam. But so far, relief has been slow to come.

Monday’s report showed sales rose even in areas hit hard by poor weather in February. Sales climbed 9 percent in the Northeast and South, which were blanketed by snow in February.

The Realtors association bases its data on signed contracts, which usually take one or two months to translate into final sales.

81. What is the effect of the government tax credit? (No more than 5 words)

　　　 Mild drinking may 　　79　 　to better heart health, but it also increases breast cancer risk.

　　　 ● 41 percent becoming overweight or fat;

●nondrinkers gaining more weight over time, 9 pounds on average;

●　 75　 　gaining about three pounds on average;

●compared with nondrinkers, women who consumed one or two alcohol drinks a day almost 30 percent 　　76　 　to become fat;

●women being 　　77　 　men in metabolism

　　　 ●about 60 percent－light or regular drinkers;

●about 40 percent－　 74　

　　　 Stop drinking alcohol to avoid the extra calories.

38．(15分)[生物--现代生物技术]

克隆羊“多利”的问世，很快在全世界引发了一场大讨论，其中关于“治疗性克隆”的问题也成为人们关注的焦点。下图所示为人类“治疗性克隆”的大概过程，请据图作答。

(1)过程A表示　　　　　 　 ，是目前实现体细胞克隆的关键技术，该技术的主要操作是用患者的体细胞提供细胞核，由 [ ① ]　　　　 细胞提供细胞质，进行人工重组得到重组细胞。

(2)经过程B得到的结构中，④　　　 (填名称)是未分化的细胞，因而这些细胞被认为是胚胎干细胞。

(3)“治疗性克隆”的结果说明高度分化的体细胞的核仍然具有　　　　　　　　 _。相同的胚胎干细胞，“克隆”的结果各种各样，如有的是神经细胞，有的是血细胞，有的是肌肉细胞，可见胚胎干细胞具有　　　　　 的全能性，究其本质原因是　　　　　　 的结果。

(4)对于“治疗性克隆”仍然存在许多争论，有一男子患有白血病，后经医生利用其出生时保留的脐带血进行治疗后康复，你认为这种做法符合伦理道德吗 　　　　为什么?

　　　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　.

22题答案(6分)

①(2分)m《M，或沙和沙桶的总质量远小于滑块的质量.

②(4分)

=

或,

23题答案：　 ① Ω ( 2分)　　 ②V₂， A₂　　 ( 4分，选对一个得 2 分)

③ 如图所示　 ( 2 分，有错不给分，但图中电压表选 V_l

或电流表选 A₁ ，不重复扣分)

37．(15分)[生物--生物技术实践]

Ⅰ.从自然界获得纯种的大肠杆菌，基本程序是：配制培养基->接种->培养->观察记录->纯化培养。请回答下列有关的问题：

(1)鉴定大肠杆菌的培养基最好使用下列哪种培养基(　　 )　

A．牛肉膏蛋白胨培养基　　　　 B．麦芽汁琼脂培养基

C．伊红-美蓝培养基　　　　　 D．MS培养基

(2)采用平板划线法接种时，开始接种时要灼烧接种环，目的是　　　　　　　　　 。要把接种后的培养基和一个未接种的培养基同时放入恒温箱培养，设置“未接种的培养基”做对照的目的是 　　　　　　　　　。

(3)将纯种酿酒酵母接种到葡萄汁中，经过发酵可以得到　　　　　　 。

Ⅱ.分析麦康开培养液和柠檬酸盐培养基，回答下面的问题：

A．麦康开培养液：蛋白胨 ，乳糖，牛胆酸盐，NaCl ，水，pH7.4, 中性红，用于肠道杆菌培养。

B.柠檬酸盐培养基：NH₄H₂PO₄ ，K₂HPO₄ ，NaCl ，MgSO₄ ，柠檬酸钠，琼脂 ，水，pH6.8 ,溴麝香草酚蓝，用于细菌利用柠檬酸盐试验。

(1)A培养基中乳糖的作用是为微生物生长提供　　　　　　　　　　　 ，B培养基中溴麝香草酚兰的作用是　　　　　　　　　　　　　　 。

(2)B培养基中的琼脂的作用是　　　　　　　　　　 。

(3)在A、B两培养基中都接种适合的微生物，然后都在适合的条件下培养，能够观察到菌落的是　　　　　　　　 。

36．(15分)已知：

下述流程中：(1)反应 D→E仅发生中和反应，(2)C与浓溴水混合不产生白色沉淀。

(1)指出反应类型：反应②　　　　　　　 　反应④　　　　　　　 。

(2)写出结构简式：D　　　　　　　　　 　C　　　　　　　　　 。

(3)写出B+E→F的化学方程式　　　　　　　　　　　　　　　　　　　　 。

(4)写出B的属于芳香烃衍生物的同分异构体的结构简式：

　　　　　　　　　　 、　　　　　　　　　　 、　　　　　　　　　　 。