Reading Comprehension TOEFL Exams 53

TOEFL Exams: Reading Comprehension - Lesson 77 (Đọc hiểu - TOEFL - Bài 77)

Đọc đoạn văn sau và trả lời các câu hỏi:

Among the problems that must be solved if even more powerful but smaller computers are to become viable propositions is the heat computer circuits generate. The present market leader, with 300, 000 chips in 100 cubic feet, requires a powerful refrigeration system; the 5 kind of super-computers now being discussed might cram half a million chips into a space the size of a shoe box, and would probably need a bath of liquid nitrogen to keep them from melting.

1. According to the passage, Los Angeles
(A) is more than 200 years old.
(B) goes back to 1818.
(C) was founded by people who traversed the United States by land.
(D) was founded in the seven-teenth century.
2. It may be inferred from the passage that
(A) the early settlers of San Francisco reached it by land.
(B) no houses were built in Los Angeles between 1781 and 1818.
(C) a few buildings in Los Angeles are more than 200 years old.
(D) there are no eighteenth-century buildings in Los Angeles.
3. When the first time the Olympic games were held there, Los Angeles was
(A) 52 years old.
(B) 114 years old.
(C) over 150 years old.
(D) over 200 years old.