以下有关甚高频通信系统的描述哪个是正确的：（）.A.利用天波传播信号 B.通信距离远

B
The following symbols have appeared on clothes labels for four decades, each one chosen by international experts for its simplicity and clarity.
Yet for most people, washing instructions might as well be written in Martian.
According to a new poll, nine in ten people are unable to decipher common symbols used on clothes labels. Even those who have mastered the difference between a wool and a synthetics（化学合成物）wash admit being baffled by the confusing array（排列）of boxes, circles and crosses used to give advice about drying and bleaching（漂白）.
The findings come from a poll of 2,000 people carried out by YouGov for Morphy Richards. A third of people surveyed said that they recognized none of the several symbols shown, while the only symbol recognized by more than half of people was the iron with a single dot. Around 70 per cent knew it meant "iron on a low heat". Just 10 per cent sign knew the sign for "do not dry clean", while only 12 per cent were familiar with "drip dry only".
Despite the sexual revolution, women are still more knowledgeable than men. Awareness was highest among 18 to 29-year-old women---for whom taking care of clothes is clearly important.
Chris Lever, from Morphy Richards, said: "Clothes Care symbols are a unique language, clearly a language that few people in the UK have taken the time to learn."
"Learning the basics such as which icon represents tumble dry and which represents normal wash would go a long way to getting the best out of clothes."
The Home Laundering Consultative Council said it was not surprised to learn that people were unfamiliar with them.
"It's disappointing that there is a lack of recognition, but it's a story that's repeated time and time again," said a spokesman, Adam Mansell. "We are a small organization and we don't have a big budget."

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60. Women know more about these common symbols than men, because _________.
A. women have the gift of recognizing these symbols by nature
B. women pay more attention to taking care of clothes in their daily life
C. women have much time to know about these symbols
D. women take advantage of the sexual revolution
61. Which of the following can be recognized by the majority of people?
                       
A              B                 C              D
62. Which of the following statements is NOT correct?
A. Washing clothes is damaging them if we don’t know about some symbols used on clothes labels.
B. Washing clothes is also a cultured knowledge.
C. More and more people devote much time to studying these symbols used on clothes labels.
D. Clothes Care symbols are a unique language, which few people spend time to learn.