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  3. Bill Gates was born on October 28, 1995 in the United States.A 19【M2】 photo

Bill Gates was born on October 28, 1995 in the United States.A 19【M2】 photo

游客2023-07-27  28
问题     Bill Gates was born on October 28, 1995 in the United States.
A 19【M2】 photo shows Bill as a rapt young teenager,
watched his friend Paul Allen type at a computer terminal.                 【M1】______
Allen became a co-founder of Microsoft. As for a child, Gates              【M2】______
had neat hair and an eager, pleasant smile. He entered Harvard
and dropped out to found Microsoft in 19【M9】Microsoft’s first              【M3】______
product was a version of the programming language BASIC, for
the Altair 8800, arguably the world’s first personal computer.
BASIC, invented by John Kemeny and Thomas Kurtz in 1964,
was someone else’s idea. Such was the Alter.                                【M4】______
    By 1980, IBM had decided to build personal computers
and needed a PC operating system. So they fired Microsoft to               【M5】______
build its operating system. Microsoft bought Q-DOS from a
company called Seattle Computer Products and retailed them                 【M6】______
for the PC.
    The PC was released in August 1981 and was following             【M7】______
into the market by huge flocks of honking, beeping clones.
Apple released the Macintosh in 1984: a sophisticated
computer was now available to the masses. In May 1990,
Microsoft finally perfected it’s own version of Apple windows              【M8】______
3.0, another huge hit.
    By the early 1990s, electronic mail and the Internet were
big. Technologists forecast an Internet centered view of computing
called "mirror worlds". The World Wide Web was emerged in                  【M9】______
1994, marking browsers unnecessary, and Netscape was founded               【M10】______
that same year. [br] 【M10】
选项
答案 unnecessary改成necessary
解析 unnecessary改为necessary，此处为逻辑错误。
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