A.PREJUDICE B.KNOWLEDGE C.MINDSET D.JUDGMENTREAD THE FOLLOWING PASSAG...

Câu 35:

A.

prejudice

B.

knowledge

C.

mindset

D.

Judgment

Read the following passage and mark the letter A, B, C, or D on your answer sheet to

indicate the correct answer to each of the questions from 36 to 42.

According to recent scientific theory, it is probable that life will develop on planets

that have a favorable environment - planets similar to ours, that orbits stars like our sun.

Since there are about 400 billion stars in our galaxy alone, that means there are a huge

number of planets like ours that could sustain life. Planets with advanced civilizations are

likely to be widely scattered throughout the universe. In the past four decades, humans on

Earth have begun to search for these civilizations. This search is called SETI, the Search for

Extra-Terrestrial Intelligence, and it has been conducted largely by searching for radio

waves emitted from civilizations on other planets.

In 1960, Dr. Frank Drake made the first attempt at SETI, by conducting a radio search

using an 85-foot antenna of the National Radio Astronomy Observatory in West Virginia.

This search, called Project Ozma, observed two stars about 12 light years away. Since that

time, more than 60 searches have been conducted by dozens of astronomers in at least eight

countries.

All searches, thus far, have faced many limitations: they used equipment that lacked

sensitivity, they did not search frequently, they covered little of the sky, or they could search

for only a few types of signals or in a few directions. The searches did turn up signals of

unknown origin, but data collected in these searches were often processed long after the

observation. In order to be sure that a signal is from another civilization,

it

has to be

independently verified and shown to originate from a point beyond the solar system. Later

searches for the unknown signals turned up nothing.

Project Phoenix, the latest SETI, is more comprehensive than any of those previous

experiments and proves to overcome all these problems. Project Phoenix uses the world’s

largest antennas. This allows it to

scrutinize

the regions around 1,000 nearby Sun-like stars,

and immediately test candidate signals. It is important that Project Phoenix continue to be

upgraded, because radio interference from Earth sources is growing, and may soon interfere

with our ability to detect possible extra-terrestrial signals. In order to overcome this growing

interference, ever better antenna systems are being developed.