Your body is made up of millions of cells.Cells are very small.

Your body has to make new cells in order to grow.It also has to make new cells to take the place of the old cells that have been worn out.

To grow，the cells need a thing called protein.The protein you need mostly comes from foods in the meat group.

Fruit and vegetables are plant foods.Foods in this group give your body vitamins and minerals.Your body needs vitamins and minerals to grow and to stay well.

The third food group is made up of bread.These foods come from grain.Your body gets heat and energy from these foods.It needs a lot of energy to work and play.

Milk is one of the best foods your body can get.It has protein，vitamins and minerals.Milk is good between meals or with meals.

36．In order to grow，your body ______.

A．has to make more water B．needs less protein

C．has to make new cells D．needs old cells

37．In order to grow，the cells need ______.

A．food B．protein C．meat D．bread

38．The protein comes mostly from ______.

A．milk B．fruit C．bread D．meat

39．Vitamins come from ______.

A．protein B．fruit and vegetables