This new method of mining for opals is very popular in Australia because it calls for ________ equipment than the ________ one．

1. A.
   less; elder
2. B.
   fewer; older
3. C.
   fewer; elder
4. D.
   less; older

This new method of mining for opals is very popular in Australia because it calls for ______ equipment than the ________ one．

A．less; elder               B．fewer; older            C．fewer; elder            D．less; older