The following passage emphasizes the role of （） in health conservation.

A．criticize Germany's tax system.
B．help companies ease their tax burden.
C．examine the current corporate tax rates.
D．propose ways to reform the tax system.

A．review some newly-published interior-design books.
B．explore the potential market for interior-design books.
C．persuade people to buy some good books.
D．stress the importance of reading good books.