11.Прочитай текст и заполни пропуски A–F частями предложений, обозначенными цифрами 1–7. Одна из частей в списке 1–7 лишняя. Занеси цифры, обозначающие соответствующие части предложений, в поле ответа. Of the trillions of viruses that exist in the world, A______________. They are up to a thousand times smaller than bacteria and consist of DNA (deoxyribonucleic acid) or RNA (dibonucleic acid) enclosed in a protein coat. Viruses are inert until they infect other organisms and can replicate only when they take over the host's cells. Dutch microbiologist Martinus Beijerinck first used the word "virus" in 1898 in his study of tobacco mosaic disease, an infection that causes tobacco leaves to discolour. Six years earlier, Russian botanist Dmitry Ivanovsky, B______________, was trying to find the cause of it. From affected leaves, he prepared a solution containing the infectious agent. He passed it through a new kind of filter, made of porcelain, C______________. Ivanovsky found that after passage through the filter, the solution was still fully capable of infecting more tobacco plants, meaning the agent was much smaller than a bacterium. He published his results in 1892 and moved on to other work. In 1897, Beijerinck conducted similar experiments, adding a second filter of gelatin. However, neither Ivanovsky D______________. Still, he concluded that the agent can replicate and multiply in living plants. Moreover, Beijerinck claimed that the virus was somewhat liquid and had a non-bacterial nature and E______________ — Latin for "poisonous fluid". Viruses were soon implicated in human diseases, the first being the yellow fever virus, F______________. In the U.S., scientist Francis Holmes showed that viruses were separate particles rather than fluids in 1929, and virologist Wendell Stanley crystallised the tobacco mosaic virus from infected leaves in 1935. 1. nor Beijerinck could culture the infectious agent 2. which was discovered in 1901 3. around 220 are known to cause disease in humans 4. so it wasn't detected 5. who also studied the disease 6. that's why he called it "virus" 7. which had pores so small it could filter out bacteria

Задание

11. Прочитай текст и заполни пропуски A–F частями предложений, обозначенными цифрами 1–7. Одна из частей в списке 1–7 лишняя. Занеси цифры, обозначающие соответствующие части предложений, в поле ответа.

Of the trillions of viruses that exist in the world, A______________. They are up to a thousand times smaller than bacteria and consist of DNA (deoxyribonucleic acid) or RNA (dibonucleic acid) enclosed in a protein coat. Viruses are inert until they infect other organisms and can replicate only when they take over the host's cells.

Dutch microbiologist Martinus Beijerinck first used the word "virus" in 1898 in his study of tobacco mosaic disease, an infection that causes tobacco leaves to discolour. Six years earlier, Russian botanist Dmitry Ivanovsky, B______________, was trying to find the cause of it. From affected leaves, he prepared a solution containing the infectious agent. He passed it through a new kind of filter, made of porcelain, C______________. Ivanovsky found that after passage through the filter, the solution was still fully capable of infecting more tobacco plants, meaning the agent was much smaller than a bacterium. He published his results in 1892 and moved on to other work.

In 1897, Beijerinck conducted similar experiments, adding a second filter of gelatin. However, neither Ivanovsky D______________. Still, he concluded that the agent can replicate and multiply in living plants. Moreover, Beijerinck claimed that the virus was somewhat liquid and had a non-bacterial nature and E______________ — Latin for "poisonous fluid".

Viruses were soon implicated in human diseases, the first being the yellow fever virus, F______________. In the U.S., scientist Francis Holmes showed that viruses were separate particles rather than fluids in 1929, and virologist Wendell Stanley crystallised the tobacco mosaic virus from infected leaves in 1935.

nor Beijerinck could culture the infectious agent
which was discovered in 1901
around 220 are known to cause disease in humans
so it wasn't detected
who also studied the disease
that's why he called it "virus"
which had pores so small it could filter out bacteria

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