营养学家认为这八种氨基酸是必需的〈荐〉.doc

Difficult Language Points and Key to Part of the Exercises, Reading Course, Book 3
UNIT ONE
Passage 1 A White Heron
(Line 5) Sylvia felt a part of the gray shadows and the moving leaves.
→ felt a part: felt to be part of
(Line 21) But she said her name, and dropped her head like a broken flower.
→ dropped: lowered
(Line 32) “You might do better if you went out to the road a mile away…”
→ do better: have more ess
(Line 35) Sylvy, step round, and set a plate for the gentleman!
→ step around: hurry up
(Line 72) If she climbed it early in the morning, she could see the whole world.
→ the whole world: for miles
(Line 87) Sylvia’s face shone like a star….
→ like a star: happily
Key to Exercise II
The girl was living in the woods with her grandmother.
He was a scientist who collected birds. He was looking for a heron.
It was love.
Because the girl could show the man where the heron was.
Yes, she knew the forest well.
The bird was living happily in the forest and was as much part of nature as she herself. They had together watched the sun rise from the top of the tree. She could not tell its secret and give its life away.
Passage 2 The Nutrients in Food
(Line 22) If adults eat too many carbohydrates and fats, they can add another 45 kilograms.
→ another: more, in addition
(Line 32) Nutritionists call eight of these amino acids essential because the body does not manufacture them..
→ call: consider to be manufacture: produce
Translation: 营养学家认为这八种氨基酸是必需的,因为人体不能自己制造它们。
(Line 72) Their hearts beat faster so their bodies can get more oxygen.
→ so: with the purpose (that)
(Line 81) Vitamin A in the es from deep yellow fruits and vegetables, dark green leafy vegetables, and whole milk.
Key to Exercise II
Because they provide the body with heat and energy.
Milk and hard cheese.
Proteins are necessary for life. They can build and repair body tissues. They are an important part of muscles, organs, skin and hair.
Some nutrients provide fuel for ener