請回答第 47 題至第 50 題:
A vegetarian diet is often praised for its health benefits. What most people are less aware of, however, are the effects
that a vegetarian diet, compared to a non-vegetarian diet, can have on the environment. How can eating meat have a negative effect on the environment? For a start, all livestock animals such as cows and
pigs release methane gas by expelling wind from their bodies. Many environmental experts now believe that methane is
more responsible for global warming than carbon dioxide. Another way in which meat production affects the
environment is through the use of water and land.
Many people now see the benefits of switching to a vegetarian diet, not just for health reasons, but also because it
plays a vital role in protecting the environment. However, some nutritionists believe a vegan diet, which excludes all
products from animal sources, such as eggs and milk, can be deficient in many of the necessary vitamins and minerals our
bodies need.
Today, more people may realize that more of us will need to become vegetarian in order to preserve the environment
and to help the human race to survive. 【題組】50 Which of the following can be concluded from the article?
(A) Many vegetarians are at risk of serious illness.
(B) Nutritionists believe that following a vegetarian diet is healthy.
(C) Eating meat is bad for the environment.
(D) There are now too many vegetarians.