[填空题]
Proofread the given passage on ANSWER SHEET TWO as
instructed.
For a {{U}}wrong{{/U}} word, underline the wrong word
and write the correct one in the blank provided at the end of the
line.
For a {{U}}missing{{/U}} word, mark the position of the
missing word with a"∧"sign and write the word you believe to be missing in the
blank provided at the end of the line.
For an
{{U}}unnecessary{{/U}} word, cross the unnecessary word with a slash "—" and pat the
word in the blank provided at the end of the line.
Begun in the late 1960s by Pentagon weapons researchers as a
system for easing
communication between computers in disparate electric
networks, the Internet has evolved (1) ______
into a
popular vehicle for scientific research, communication, entertainment, and more.
It
links together thousands of computer networks such as those belonging to
corporations, (2) ______
commercial se