填空题
For answers 56 - 60, complete the sentences with
the information given in the passage in a maximum of 4
words.
填空题
The fish that produce electricity belong to ______.
填空题
A torpedo's hexagonal shaped cells contain a number of ______.
填空题
A fully grown torpedo can give a ______ than a young one.
填空题
The catfish's electric current passes from the ______.
填空题
The electric fish produce electricity mainly for ______.