Historians _are still debating when the first computer virus really appeared. We know a few things for certain, however: the first computer, which _was__ generally considered to have been invented by Charles Babbadge, did not have any viruses. The first computer virus was a program called “Elk Cloner”. It was created by rich Skrenta, a computer programmer who studied at high school at the time. This virus _was___created in 1982. “Elk Cloner” attached itself to the Apple DOS 3.3 operating system and ___was__ later spred by a floppy disk. When the virus was created, it __was_internationally made as a joke by a high school student, who _input the virus into a game in which the virus set off after the 50th time of using the game. When the virus set off, a blank screen appeared and displayed a poem about the virus. The computer then became infected. - не везде уверена. простите, если что не так!
1. She sat (или was sitting- здесь возможны варианты!) in the library, studying up on issue cultures as an aid to further practical work in the laboratory 2 .Ted had been helped in setting her up with some relatively harmful viruses so that she could get familiar with the latest virology equipment. 3. Melissa checked her watch. At three she had an appointment with her boss. 4. The day before she gave his secretary a formal request for permission to use the laboratory, outlining the experimental work she wanted to do. знаете, а глагол был только в первой скобке!... проверьте само задание,а? ну, на всякий случай...
work in the laboratory
2 .Ted had been helped in setting her up with some relatively harmful viruses so that she could get familiar with the latest virology equipment.
3. Melissa checked her watch. At three she had an appointment with her boss.
4. The day before she gave his secretary a formal request for permission to use the laboratory, outlining the experimental work she wanted to do.
знаете, а глагол был только в первой скобке!... проверьте само задание,а? ну, на всякий случай...