In our daily life，some people think that smoking （36） 　　help them relax．In fact，smoking is really（37） 　　．Do you know that there（38） 　　over 4，000 chemicals in cigarettes？These chemicals are （39） 　　our bodies．They can cause cancer and （40）____diseases．

The smoke from cigarettes harms（41） 　　smokers but also other people．It's（42） 　　"second﹣hand smoke"and it can be （43） 　　and has higher risks．Smokers shouldn't use smoking（44） 　　them relax．They must give up（45） 　　as soon as possible．

36．A．must	B．can	C．should
37．A．healthy	B．health	C．unhealthy
38．A．be	B．is	C．are
39．A．good	B．bad	C．well
40．A．other	B．others	C．another
41．A．only	B．not only	C．just
42．A．called	B．calls	C．calling
43．A．more dangerous	B．dangerous	C．the most dangerous
44．A．help	B．to help	C．helping
45．A．smoke	B．smokers	C．smoking．