However, many of these fast foods have been attacked by scientists. The main problem with most fast food meals is that they're not nutritionally balanced. Those of chicken or beef usually contain more than enough protein for a person in one meal. They tend to supply you with too much fat and sugar but too little vitamins and iron. Pizza, a well-balanced fast food, however, is especially high in salt content, a factor for developing high blood pressure. And potatoes are a nutritious food, but when fried in fat they also become a high-fat food. Fast food meals also sadly lack of vegetables and fruit. Thus it is good to eat vegetables and fruit at your other meals on the days when you eat fast food.
There are many reasons why Americans like fast food EXCEPT that ______.
A. fast food is very cheap
B. fast food is very delicious
C. only a little of fast food makes you feel full
D. fast food is nutritionally balanced
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Which statement is NOT true according to the last paragraph？
A. Sprinklers were used to protect citrus trees from being damaged.
B. Citrus trees would be damaged if the temperature drops below minus 2℃ for four hours.
C. The Carolinas, Tennessee and parts of Virginia were covered with snow.
D. Florida Citrus Mutual sprayed trees with sprinklers for citrus growers.
A．He thinks that-the speaker won't show up.B．He thinks the seminar won't be open to th
A. He thinks that-the speaker won't show up.
B. He thinks the seminar won't be open to the public.
C. He thinks that there won't be enough seats for everybody.
D. He thinks that there might not be any more tickets available.
对于被判处徒刑缓刑的罪犯，都是由公安机关考察的。()
A. 正确
B. 错误
Which of the following statements is NOT true according to the text？
A. Building the special pressure chamber is too difficult to be done.
B. The density of the artificial diamonds is the same as the true ones.
Carbon turns into diamonds under very heavy pressure and high temperature.
D. Scientists had been working for many years to duplicate natural diamonds.
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