The last sentence means that a knowledge of fish sounds can help man to （）.
A: avoid confusion in fishing activity
B: avoid unneeded effort in fish sound studies
C: detect enemy submarines
D: pick up new sounds
A: avoid confusion in fishing activity
B: avoid unneeded effort in fish sound studies
C: detect enemy submarines
D: pick up new sounds
举一反三
- The sentence "He cannot help it" (ParA．3, Line l) most probably means " （）". A: man cannot avoid destroying the environment B: man cannot obtain resources he needs from other planets C: man cannot survive for a long time D: man cannot help to create a new environment
- To be frank, I like ___________,but now I don't like_________today because of the bad weather. A: fishing; fishing B: to fish; to fish C: tpfish; fishng D: fishing; to fish
- If a contractionrhymeswith another word, it means they ( ). A: end with the same sounds B: sound exactly the same
- —What will you do tomorrow —I' II go ______ tomorrow. A: fishing B: fish C: to fish
- As is known to us all, __________travels much faster than__________ A: lights,sounds B: light,sound C: sound,light D: sounds,lights