When a fire breaks out, most animals leave immediately, but

When a fire breaks out, most animals leave immediately, but one kind of insect flies directly toward the fire. This unusual insect is the jewel beetle(吉丁虫) or commonly known as the black fire beetle.
Jewel beetles live in many places around the world. Its shell is covered in bright beautiful colors. In fact, this is where they get their name. The jewel beetle looks almost like any other beetle, but it has very small holes on the bottom of its body. Scientists say that the jewel beetle uses these holes to sense a fire.
Jewel beetles can sense a fire from up to 80 kilometres away. This ability is important to the jewel beetle because the burned and destroyed remains of a forest are the perfect place for them to lay their eggs! They lay their eggs in the burned wood. No other animals or insects will harm their eggs. The burned wood is good for the young beetles when they are born.
Professor William George Evans studied his first jewel beetle in 1960. He believed that there were many sensors(传感器) in each hole, which could sense a fire from a great distance. For almost 40 years many other scientists did not believe Professor Evans. But today, after years of research, scientists finally agree that the jewel beetle can sense a fire.
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When a forest burns, it sends off heat, which travels as infrared radiation(红外辐射). The infrared radiation travels into the holes on the beetle and affects the sensors. When this happens, the beetles know there is a fire and travel toward the fire to lay eggs.
Research teams have studied these beetles very closely. They want to know if they can copy the methods that the jewel beetles use to find a fire. Fire fighters believe that using this kind of sensor could help to save property(财产) and people all over the world.
41. The jewel beetles get its name______________.
A. because of its black appearance B. because it can put out the fire
C. because of its beautiful shell D. because it lives in the dark
42. Why does the jewel beetle fly towards the fire?
A. They need fire. B. They’re interested in fire.
C. To save other insects. D. To protect their eggs.
43. We can learn from the passage that______________.
A. each jewel beetle has 80 holes on its body B. the jewel beetle was widely studied in 1960
C. Professor Evans followed other scientists’ study D. Professor Evans’ study was doubted for a long time
44. Paragraph 5 is mainly about ____________
A. how heat travels in the air B. why the jewel beetle has sensors
C. how the infrared rad