将一枝开红花的牡丹嫁接到开白花的牡丹上，新嫁接上的枝条将来开花的颜色是[ ] A

有甲、乙两只桶，甲桶盛了半桶水，乙桶盛了不到半桶纯酒精，先将甲桶的水倒入乙桶，倒人的量与乙桶的酒精量相等；再将乙桶的溶液倒人甲桶，倒人量与甲桶剩下的水相等；再将甲桶溶液倒入乙桶，倒入量与乙桶剩下的溶液量相等，此时，恰好两桶溶液量相等，求此时，甲、乙两桶酒精浓度比。

切口疝最常发生在哪种切口

A．麦氏切口

B．肋缘下切口

C．经腹直肌切口

D．中切口

E．旁正中切口

(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

无线上网的计算机也会有天线辐射，因为键盘实质上也是天线。在键盘的每个按键处布满了纵横网络，本身就形成了天线，而且每个键随时都在被高频电磁扫描，能发射出大量的电磁波。通常，人们只注意将电磁波封堵在机箱内但是却很大程度上忽略了键盘的电磁波外泄。根据以上论述，无法推出的是______。

A．有线上网的计算机存在着天线辐射问题

B．机箱具有防止机箱内电磁波外泄的功能

C．人们对电脑电磁辐射的防护存在盲区

D．长时间在电磁波环境下工作容易导致人体损伤