In the U.S. today, it is common to pay one fourth to one third of
family’s income on the place to live. Big houses are more expensive
than smaller ones. And houses closer to the center of big cities are
more expensive than the ones in the suburbs or in small towns.
39. The c _________ of housing in the U.S. today is very high.
Paragraph Five
A new public health report concludes there is no safe level of
environmental tobacco smoke. One of the nation’s top public health
physician says inhaling someone else’s tobacco smoke leads to an
immediate chain of biological events that can lead to disease in a non
-smoker and even death.
40. Expert w __________ against environmental tobacco smoke.
Paragraph Six
Dehydration limits a person’s ability to work and think. Experts say a
reduction of only four or five percent in body water leads to a drop of
twenty to thirty percent in work ability. The loss of salt through
perspiration also reduces the amount of work that muscles can do.
41. R ________ between dehydration and person’s ability to work and
think.
