Read the passage and answer question

----- Nội dung dịch tự động từ ảnh -----
radio waves instead of light waves, which the hunman eye uses in seeing.
This makes it possible for radar to locate many kinds of objects at far
greater distances than the eye can see.
Today, networks of radar lookout stations guard the United States and
Canada 24 hours a day against long-range missiles and airplanes, Patrol
planes and ships search the oceans with radar for hostile ships and
aircraft. Airports use radar to guide planes safely to earth in fog or
storms. Ships use it to steer clear of other vessels or icebergs. Radar
helps weathermen warn of approaching hurricanes and tornadoes.
1. What is radar?
2. What can radar find and accurately locate?
3.
Can radar locate many kinds of objects at far greater distances than the
eye can seе?
4. What do patrol planes and ships search the oceans with radar for?
5.
What does radar help weathermen warn of?
TEST 3
I. Choose the word in each group that has the underlined, bold part
pronounced differently from the rest.
b. deny
Eg: a. sky
c. differently
d. cry
+Answer: c. differently
a. fans
b. seas
c works
d. jobs
1.
a. divided
b. lied
c. polluted
d. wanted
2.
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