[填空题]We need to eat more fat, because a gram of fat contains more calories than a gram of protein.

[填空题]We need to eat more fat, because a gram of fat contains more calories than a gram of protein.

[填空题]A gram of fat has more calories than a gram of protein, so we need to eat more fat.

[简答题]Modern chickens fight more because they need more food and water to lay more eggs. About 35 percent of them die because of fights. As a result, many farmers are forced to cut the beaks(鸟嘴，喙) of their chickens to prevent them from harming each others.

[填空题]Tom gave us some sweets to eat.
→ We ______ some sweets to eat______.

[填空题]We modem people eat not only when we are hungry but also when we are in bad mood.

[填空题]We modern people eat not only when we are hungry but also when we are in bad mood.

[填空题]Parents should ask fat children to eat foods rich in ______ instead of fattening foods.

[简答题]We cannot draw to us more than we believe we are worth. Everything that happens to us and every choice we make is a reflection of what we believe about who we are. Our inspiration comes from our self-acceptance. Our motivation comes from our self-reliance. When we accept ourselves and rely on ourselves, we feel good about ourselves. When you feel good about something, you believe in it. When you believe in it, it will work for you!

[单项选择]
We are surrounded by so much paper and card that it is easy’ to forget just how complex it is. There are many varieties and grades of paper materials, and whilst it is fairly easy to spot the varieties, it is far more difficult to spot the grades.
It needs to be understood that most paper and card is manufactured for a specific purpose, so that whilst the corn-flake packet may look smart, it is clearly not something destined for the archives. It is made to look good, but only needs a limited life span. It is also much cheaper to manufacture than high grade card.
Paper can be made from an almost endless variety of cellulose-based material which will include many woods, cottons and grasses or which papyrus is an example and from where we get the word "paper". Many of these are very specialized, but the preponderance of paper making has been from soft wood and cotton or rags, with the bulk being
A. strong alkalies
B. caustic soda
C. cellulose fibres
D. a pulp &cellulose fibres