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.
A: in the head.
B: in the tail.
C: in the abdomen,
D: in the wing.
举一反三
- 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. B: 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.
- 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.
- With a chemical r______, a new substance can form.
- We<br/>can get a new substance if we _____ a chemical substance with others. A: incorporate B: insert C: obtain D: deprive
- The chemical potential of substance B can be defined as [img=119x47]1803a1a9bb65d2b.png[/img]