We take it (1) FOR granted that when we put something in our mouths, we taste it. But why should our bodies be able to detect chemicals in this way? In order (2) TO answer that question, we need to consider two things: the dietary requirements (3) WHICH our bodies and the risks associate (4) WITH eating.
Our bodies need certain substances (5) ON a regular basis, including vitamins, carbohydrates and salt. The flavour of food, (6) SUCH as fruit, gives us important information
(8) ABOUT the nutrients it contains. Sweet tastes mean sugar, which (7) IN turn means high energy levels. Salty tastes indicate the presence of other chemicals we need besides sugar. Because we find these tastes pleasurable, we tend to eat food that (9) IS high in these substances.
Bitter and sour tastes, on the other hand, usually act (10) AS nature's warming devices. When something is poisonous, it usually has a bitter flavous, a taste (11) WHICH we naturally dislike. Also, as food (12) GOES off it tends to develop a sour taste. This means that we are able to avoid food that could cause health problems.
1.What time do the shops open in Holland?
2. He usually plays football on the weekend.
3. How many years do kangarooms live? Up to 15 years.
4. Penguins have got wings but they can't fly.
5. How many legs has the tiger got?
6. She was born the 2nd August, 1991.
7. Do you usually watch TV in the evening?
8. He always has lunch at 2 o'clock.
9. He never wakes up early on Sundays.
10. He doesn't eat meet. he hates it.
11. How much does a sea lion weigh?
12. what does he do? He is a student.
13. Jane likes cars but she doesn't like dogs.
14. He likes reading, but he doesn't like fishing.
15. the plane arrives at a quarter to seven
16. Do you like your job?
17. She likes Sunday because she goes to the disco.
18. How old are you? I am thirty-nine.
19. What do you do in your free time?
