Read the following passage and choose A, B, C and D for each of the following questions below.

Radar is an electronic device that can “see” great distances (1) ……………………fog, rain, snow, clouds and darkness. It can find and accurately (2) ……………………missiles, air-craft, ships, cities, rainstorms, and mountains. Radar uses radio waves (3) ……………………light waves, which the human eye uses in seeing. This (4) ……………………it likely for radar to locate many kinds of object at greater distances (5) ……………………the eye can see.

Radar became an (5) ……………………military device during World War II. Today, networks of radar lookout stations guard the United States and Canada 24 hours a day (6) ……………………long-range missiles and airplanes. Petrol planes and ships search the oceans (6) ……………………radar for hostile ships and aircraft. Airports use radar to (7) ……………………planes safely to earth in fog or storms. Radar helps weatherman warn of (8) ……………………hurricanes and tornadoes.

1.    A. despite of    B. despite    C. although    D. even though

2.    A. locate   B. locating    C. located     D. location

3.    A. instead    B. instead of    C. in spite of    D. despite of

4.    A. make    B. makes   C. do     D. does

5.    A. more than     B. than    C. that   D. as

6.    A. import     B. importance    C. important    D. importantly

7   . A. against    B. for    C. to    D. with

8.    A. by     B. with    C. on    D. at

9. A. guiding    B. guide     C. scouting     D. scout

10.  A. approach   B. approached    C. to approach    D. approaching

* Read the following passage and choose A, B, C and D for each of the following questions below.
Radar is an electronic device that can “see” great distances (01) ……………………fog, rain, snow, clouds and darkness. It can find and accurately (02) ……………………missiles, air-craft, ships, cities, rainstorms,
and mountains. Radar uses radio waves (03) ……………………light waves, which the human eye uses in seeing. This (04) ……………………it likely for radar to locate many kinds of object at greater distances (05) ……………………the eye can see.
Radar became an (06) ……………………military device during World War II. Today, networks of radar lookout stations guard the United States and Canada 24 hours a day (07) ……………………long-range missiles and airplanes. Petrol planes and ships search the oceans (08) ……………………radar for hostile
ships and aircraft. Airports use radar to (09) ……………………planes safely to earth in fog or storms.
Radar helps weatherman warn of (10) ……………………hurricanes and tornadoes.
01. A. despite of B. despite C. although D. even though
02. A. locate B. locating C. located D. location
03. A. instead B. instead of C. in spite of D. despite of
04. A. make B. makes C. do D. does
05. A. more than B. than C. that D. as
06. A. import B. importance C. important D. importantly
07. A. against B. for C. to D. with
08. A. by B. with C. on D. at
09. A. guiding B. guide C. scouting D. scout
10. A. approach B. approached C. to approach D. approaching

Radar is an electronic device that can “see” great distances (1)_____fog, rain, snow, cloud, and darkness. It can find and (2)_____locate missiles, aircraft, ships, cities, rainstorms, and mountains. Radar uses radio waves, (3)_____light waves, which the human eye uses in seeing. This makes it (4)_____for radar to locate many kinds of objects at (5)_____greater distances than the eye can see. Radar became an important military device during World War II. Today, networks of radar lookout stations guard the United States and Canada 24 hours a day against (6)_____missiles and airplanes. Patrol planes and ships (7)_____the oceans with radar for hostile ships and aircraft. Airports use radar to ()_____planes safety to earth in fog or storms. Ships use it to steer clear of other (59)_____or icebergs. Radar helps weathermen warn of (10)_____ hurricanes or tornadoes.

Read the passage and choose the best answer.

A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms. 

 According to the passage, the distance between a radar set and an object can be determined by _______.  

A. the time it takes for a burst of radio waves to produce echoes when the waves bounce off the object 

B. the term “ranging” used for detection of the distance between an object and the radar set 

C. the time it takes for the radio waves to produce echoes and bounce off the object 

D. the time it takes for the echoes produced by the radio waves to return to the radar set

Read the passage and choose the best answer.

A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms. 

According to the passage, what can radar detect besides location of objects?  

A. Shape.            

B. Size.                 

C. Speed.              

D. Weight.  

Read the passage and choose the best answer.

A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms. 

 The word “exemplified” in the passage can be replaced by _______.  

A. “specified”

B. “resembled” 

C. “illustrated” 

D. “justified”

I. WORD FORM
1. Radar is an __________________ device. (electronically)
2. What makes a computer such a ___________ device? (miracle)

3. David can make an airplane appear and disappear ________. (magical)
4. Nowadays, more and more young people want to have a university _____________ (educate)
5. He typed this report fast and ________________. (accuracy)
6. He used his calculating machine to ________ the cost of building a bridge. (calculator)
7. Faraday is one of the famous _________________ in the world. (invention)
8 The oy didn‟t content with her unequal __________________ of the cake (divide)
9. We are in regular __________ with each other by telephone or letter.( communicate)
10. Information technology is very _______ to our lives. (use )

GHI ĐÁP ÁN VÀ GIẢI THÍCH TẠI SAO RA ĐƯỢC ĐÁP ÁN ĐÓ. MN GIÚP E BÀI NÀY VỚI Ạ.

I. WORD FORM
1. Radar is an __________________ device. (electronically)
2. What makes a computer such a ___________ device? (miracle)

3. David can make an airplane appear and disappear ________. (magical)
4. Nowadays, more and more young people want to have a university _____________ (educate)
5. He typed this report fast and ________________. (accuracy)
6. He used his calculating machine to ________ the cost of building a bridge. (calculator)
7. Faraday is one of the famous _________________ in the world. (invention)
8 The oy didn‟t content with her unequal __________________ of the cake (divide)
9. We are in regular __________ with each other by telephone or letter.( communicate)
10. Information technology is very _______ to our lives. (use )

GHI ĐÁP ÁN VÀ GIẢI THÍCH TẠI SAO RA ĐƯỢC ĐÁP ÁN ĐÓ. MN GIÚP E BÀI NÀY VỚI Ạ.E ĐANG CẦN GẤP Ạ.