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.

"Support" generally means work to fix bugs ________ , generally for more urgent and breaking bugs. A: on a scheduled basis B: on a regular basis C: on an ad hoc basis D: on a routine basis

We usually install ___ on a window to prevent from the mosquitoes and bugs. (   )

Kissing bugs only feed on humans.

_________needs to be renewed because the bugs need to be debugged.

Such vermin as bugs and rats （is, are ）hard to get rid of.

4. Finding bugs in a software system is the only task of a tester.

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 software tester’s task is to help find out the bugs in a software system before it is released.

All programs have bugs and need endless __________. A: versatility B: refinement C: transparency D: disruption