The computer can do most of the things __11__ the people. It can help us to __12__ about the real world more quickly, to learn __13__ we want to learn and to think __14__ ourselves. __15__ a student in the twenty-first century, you must work hard at it.
1. A. inventions
B. discoveries C. robots
D. inventors
2. A. twenty-first
B. twenties
C. twelfth
D. twentieth
3. A. also
B. but also
C. too
D. either
4. A. in
B. to
C. by
D. over
5. A. takes
B. helps
C. gets
D. brings
6. A. found
B. invented C. called
D. bought
7. A. easy
B. small
C. large
D. light
8. A. For
B. Until
C. When
D. Since
9. A. by
B. across
C. through
D. against
10.A. serious
B. harmful.
C. dangerous
D. helpful
11.A. for
B. to
C. at
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