65._________A. lawyerB. doctorC. customerD. speci

When considering the lowest fuel system operating temperature, _____ are important.A.speci

How many ______ known altogether？A．species of fishes areB．species of fish isC．specieses of

Fossil records indicate______existing in the past have become extinct.A．that many species

The bird watchers were on the ______ for the rare species.A．alterB．alertC．alikeD．altar

The Congress in South Korea announced that______.A．the 100 most endangered species have be

Some conservationists fear that many endangered species will not be valued because ______.