（4分）现有木炭、二氧化碳、氧化铜、石灰水、稀硫酸和碳酸钾溶液六种物质。如图，已

祖冲之的圆周率比外国人取得这一成果要早（）年。

患儿，女，2．5岁。因疹后皮肤脱屑而诊。患儿8天前发热高达39～40℃，咳嗽、流涕、畏光流泪，并全身淡红色皮疹4天。昨日退热，食欲增加。查体：体温37.1℃，面、颈、胸、腹部有糠麸样脱屑，脱屑后皮肤有浅褐色色素沉着。四肢及手足有暗红色斑丘疹，疹间皮肤正常。诊断为

A．猩红热脱皮期

B．麻疹出疹期

C．麻疹恢复期

D．风疹恢复期

E．幼儿急疹

材料一：不曾留意的镜头：A班同学去操场上做操了，可教室里的灯还亮着；灿烂的阳光已透射进来，可B班的灯依旧亮着。

材料二：令人吃惊的数据：如每人每年浪费一度电，按目前全市在校中小学生总数计算，一年将浪费的总电量为75.6万度。

请回答：

（1）上述材料启示我们应牢固树立什么观念？当遇到类似材料一的问题时，你是怎么做的？请举例说明。

（2）如对上述问题开展调查，你将采用哪些调查方法？

说明细菌与病毒的主要区别点。

(D)

Consumers are being confused and misled by the hodge-podge of environmental claims made by household products, according to a "green labeling" study published by Consumers International Friday.

Among the report’s more outrageous findings-a German fertilizer described itself as "earthworm friendly" a brand of flour said it was "non-polluting" and a British toilet paper claimed to be "environmentally friendlier".

The study was written and researched by Britain’s National Consumer Council (NCC) for lobby group Consumer International. It was funded by the German and Dutch governments and the European Commission.

"While many good and useful claims are being made, it is clear there is a long way to go in ensuring shoppers are adequately informed about the environmental impact of products they buy." said Consumers International director Anna Fielder.

The 10-country study surveyed product packaging in Britain, Western Europe, Scandinavia and the United States. It found that products sold in Germany and the United Kingdom made the most environmental claims on average.

The report focused on claims made by specific products, such as detergent insect sprays and by some garden products. It did not test the claims, but compared them to labeling guidelines set by the International Standards Organization (ISO) in September, 1999.

Researchers documented claims of environmental friendliness made by about 2,000 products and found many too vague or too misleading to meet ISO standards.

"Many products had specially-designed labels to make them seem environmentally friendly, but in fact many of these symbols mean nothing." said report researcher Philip Page.

"Laundry detergents made the most number of claims with 158. Household cleaners were second with 145 separate claims, while paints were third on our list with 73. The high numbers show how very confusing it must be for consumers to sort the true from the misleading." he said.

The ISO labeling standards ban vague or misleading claims on product packaging, because terms such as "environmentally friendly" and "non-polluting" can not be verified. "What we are now pushing for is to have multinational corporations meet the standards set by the ISO." said Page.

According to the passage, the NCC found it outrageous that（）.

A. all the products surveyed claim to meet ISO standards

B. the claims made by products are often unclear or deceiving

C. consumers would believe many of the manufactures’ claim

D. few products actually prove to be environment friendly