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Lightning bugs can blink themselves because of a chemical substance Lightning bugs can blink themselves because of a chemical substance A．in the head. B．in the tail. C．in the abdomen, D．in the wing.

A. in the head.
B. in the tail.
C. in the abdomen,
D. in the wing.

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Lightning bugs can blink themselves because of a chemical substance Why do female lightning bugs have brighter and stronger light than male lightning bugs

A. Because they have different physical construction.
Because they are more offensive than male lightning bugs.
C. Because they want to frighten their enemies.
D. Because they try to attract males to them.

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The report issued by the Kaiser Family Foundation mainly shows that The report issued by the Kaiser Family Foundation mainly shows that A．American kids have easy access to junk food. B．American kids are exposed to an attack of food ads. C．American kids do not take enough exercises. D．American kids’ fatness is likely due to watching too much TV.

American kids have easy access to junk food.
B. American kids are exposed to an attack of food ads.
C. American kids do not take enough exercises.
D. American kids’ fatness is likely due to watching too much TV.

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Lightning bugs can blink themselves because of a chemical substance According to the passage, which of the following about lightning bugs is INCORRECT

A. They use blinking signals to communicate.
B. They use blinking signals to seek for food.
C. They use blinking signals to attract their own species.
D. They use blinking signals to frighten and warn enemies.

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The man stops to take his dog outside to do exercise because The man stops to take his dog outside to do exercise because A．he doesn’t have enough time. B．he feels tired of running after his dog. C．he thinks his dog has mental problems. D．he treats the dog the way his parents treats him.

A. he doesn’t have enough time.
B. he feels tired of running after his dog.
C. he thinks his dog has mental problems.
D. he treats the dog the way his parents treats him.

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Lightning bugs can blink themselves because of a chemical substance Lightning bugs can blink themselves because of a chemical substance A．in the head. B．in the tail. C．in the abdomen, D．in the wing.

A. in the head. B. in the tail. C. in the abdomen, D. in the wing.

Lightning bugs can blink themselves because of a chemical substance Why do female lightning bugs have brighter and stronger light than male lightning bugs

Lightning bugs can blink themselves because of a chemical substance According to the passage, which of the following about lightning bugs is INCORRECT

The man stops to take his dog outside to do exercise because The man stops to take his dog outside to do exercise because A．he doesn’t have enough time. B．he feels tired of running after his dog. C．he thinks his dog has mental problems. D．he treats the dog the way his parents treats him.

A. in the head.
B. in the tail.
C. in the abdomen,
D. in the wing.