A．The rights of private business owners should be protected.
B．The government shouldn' t interfere in private business.
C．Politicians should support industrial growth.
D．Competition among companies should be restricted.

A．It divides into two different parts.
B．It keeps the same chemical structure.
C．It becomes part of a new chemical compound.
D．It produces more of the enzyme (酶).

A．Provide extra energy to start the reaction.
B．Raise the temperature of the chemicals.
C．Release a chemical needed to start the reaction.
D．Lower the amount of energy needed to start the reaction.