What might be the cause of the bats' collisions?（ ）
举一反三
- What might be the cause of the bats' collisions?( ). A: Reflected light. B: Reflected sound. C: Toxic suroundings. D: Not mentioned.
- Depression might be the cause of ______.
- What is cause and what is effect？ A cause is what ______ something happen; an effect is what happens as result of a ______.
- The outbreak of intense anger might cause a heart attack. ( )
- What is cause and what is effect？