What might be inferred about radar?
A.It takes the place of a radio.
B.It has improved navigational safety.
C.It was developed from a study of sound waves
D.It gave birth to the invention of the airplane.

Which of the following would most likely be the topic of the next paragraph?
A.A history of flying.
B.Other uses of radar.
C.The technology used by pilots.
D.Uses of some technology.

Which type of waves does radar use?
A.tidal
B.sound
C.heat
D.radio

Which of the following words best describes the tone of this passage?
A.argumentative
B.explanatory
C.humorous
D.imaginative

The word “exemplified” in the passage can be replaced by _______.
A."specified”
B.“resembled”
C.“illustrated”
D.“justified”

According to the passage, what can radar detect besides location of objects?
A.Shape.
B.Size.
C.Speed.
D.Weight.

Which of the following could best replace the word “allocated”?
A.set aside
B.combined
C.taken
D.organized

What does the term “international boycott” refer to?
A.A global increase in animal survival
B.A refusal to buy animal products worldwide
C.Defraying the cost of maintaining national parks
D.Buying and selling of animal products overseas

It/ not easy/ remain/ tranquil/ events/ suddenly/ change/ life.
A.It is not easy remain tranquil when events suddenly change life.
B.It is not easy to remain tranquil when events suddenly change your life.
C.It is not easy remaining tranquil when events suddenly change your life.
D.It is not easy to remain tranquil if events suddenly change life.

They/ leave/ early/ not/ catch/ traffic.
A.They left early so that not to catch in the traffic.
B.They left early to avoid not being caught in the traffic.
C.They left early so as not to get caught in the traffic.
D.They left earlt in order to not get caught in the traffic.