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- A.the mass of the fishDecides the intensity of electric power it generates
- B.the strength of shock givenBy a young electric ray can only light theBulb of apocket flashlight
- C.to make full use of the energy producedBy electric fish，suitable wires shouldBeavailable
- D.a mature torpedo is capable of producing enough electricity to knockDown a man
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（ ）Usually you will not get a shockBy touching the electric ray in one place onlyBe．cause__________．
- A.a torped0’s electric cells contain more than one electricDlates
- B.to complete the circuit，you have to touch the fish in twoDlaces
- C.the current in one place is not strong enough to give a shock
- D.the fish’s electric cells are filled with jelly-like substance
- A.compared with those in the torped0，the working system of electric plates in theeel is moreDirect and efficient
- B.compared with other electric fish，the eel possesses much more electricDlates
- C.the working system of the electric plates in the eel is far inferior to those in thetorpedo
- D.the working system of the electric plates in the eel is the most effective
- A.Because he feels that he mightBe exaggerating
- B.Because he has recently praised more works than usual
- C.Because lie finds it hard toBe objective
- D.Because he feels he may not praise the work sufficiently
