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细胞分裂素合成酶基因突变失活的拟南芥突变体，顶端优势______。
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在较强光照下，降低CO2浓度，下列作物中光合速率下降更快的一组是______。
植物光周期现象中间断暗期最有效的光及其原因是______。
Although one might not think so from some of the criticism of it, advertising is essential to the kind of society in which people in the United Kingdom, and a very large part of the world at large, live. Advertising is necessary as a means of communicating with others. It is also a way of telling people about the goods and services that are offered. If it were not for advertising, some goods information would never reach the ears of many people. Advertising helps a great deal to raise the people"s standard of living.In talking about advertising, one should not think only in terms of commercial on television, or an advertisement in the newspapers or periodicals. In its widest sense, advertising includes many other activities such as packaging, shop displays and even the spoken word of the salesman. After all, the roots of advertising are to be found in the market place.For many years it was thought that it was enough to produce goods and supply services. It is only more recently that it has become increasingly understood that the production of goods is a waste of resources unless those goods can be sold at a fair price within a reasonable time span. In the competitive society in which we live, it is essential that we go out and sell what we have to offer, and advertising plays an important role in this respect, whether selling at home or in export markets.About 2 percent of the U.K. gross national product is spent on advertising. But it must not be thought that this advertising tries to sell goods to consumers who do not want them. Of course, advertising does try to attract the interest of the potential consumer, but if the article purchased does not match up to the standards that the advertising suggests that it will, it is obviously unlikely that the article will sell well. ______ Advertising is essential for goods to be sold in foreign country.
Although one might not think so from some of the criticism of it, advertising is essential to the kind of society in which people in the United Kingdom, and a very large part of the world at large, live. Advertising is necessary as a means of communicating with others. It is also a way of telling people about the goods and services that are offered. If it were not for advertising, some goods information would never reach the ears of many people. Advertising helps a great deal to raise the people"s standard of living.In talking about advertising, one should not think only in terms of commercial on television, or an advertisement in the newspapers or periodicals. In its widest sense, advertising includes many other activities such as packaging, shop displays and even the spoken word of the salesman. After all, the roots of advertising are to be found in the market place.For many years it was thought that it was enough to produce goods and supply services. It is only more recently that it has become increasingly understood that the production of goods is a waste of resources unless those goods can be sold at a fair price within a reasonable time span. In the competitive society in which we live, it is essential that we go out and sell what we have to offer, and advertising plays an important role in this respect, whether selling at home or in export markets.About 2 percent of the U.K. gross national product is spent on advertising. But it must not be thought that this advertising tries to sell goods to consumers who do not want them. Of course, advertising does try to attract the interest of the potential consumer, but if the article purchased does not match up to the standards that the advertising suggests that it will, it is obviously unlikely that the article will sell well. ______ An article will sell well as long as it has just-so-so quality and good advertisement.
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