Vitamins are complex chemical substances (find) in many foods. The human body needs them for health and
(grow). The body makes some vitamins, but usually in amounts too small to meet its needs.
vitamins are not made in the body. These must __
_(supply). No one knows
(exact) how all vitamins work. Doctors do know that vitamins have very special uses.
, One vitamin cannot take the place of another. The steady absence of one vitamin causes a deficiency disease. Rickets, scurvy, and pellagra are examples_
__ deficiency diseases.
It is best to get vitamins eating the foods in which they occur. There are also pills that contain a single vitamin _
_a combination of vitamins. People should ask their doctors_
__they take any vitamin pills.
Sarah: Hey Kelly , how is everything____________(go)?
Kelly: Not so good.
Sarah: Why ? I thought you almost_______(finish) it last night.
Kelly: Well, all the computers at the computer center are taken, ______ I can’t type it.
Sarah: The same thing happened________ me a few weeks ago. Every time I went to the center, all the computers
______________(use).And I have a lot of papers
_______ had to be done on the computer. I ended up finishing them by hand.
Kelly: There are so few computers _____all the students here.
Sarah: We should write a letter and require the school to add more computers.
Kelly: Good ideas. Do you want to get together to write _______ letter tonight?
Sarah: Sure, But I have a study group meeting at 7:30.
Kelly: Ok, Let’s meet________(early) in the dining hall at 6:30.
_______ shouldn’t take us long to write.
Sarah: See you then. Meanwhile, good luck with you paper.
Kelly: Thanks!!
Once there lived a rich man wanted to do something for the people of his town.
first he wanted to find out whether they deserved his help.
In the centre of the main road into the town, he placed very large stone. Then he
(hide ) behind a tree and waited. Soon an old man came along with his cow.
“Who put this stone in the centre of the road?” said the old man, but he did not try to remove the stone. Instead, with some difficulty he passed around the stone and continued on his way. man came along and did the same thing; then another came, and another. All of them complained about the stone but not tried to remove
. Late in the afternoon a young man came along. He saw the stone,
(say) to himself: “The night
(be) very dark. Some neighbors will come along later in the dark and will fall against the stone.”
Then he began to move the stone. He pushed and pulled with all his (strong) to move it. How great was his surprise at last!
the stone, he found a bag of money.
Many years ago, when I worked as a volunteer at Stanford Hospital, I got to know a little girl _____ (name) Liz who was suffering from a rare and serious disease. Her only chance of recovery appeared to be a blood transfusion（输血） _____
her 5-year-old brother, ____
had miraculously survived the same disease and had developed the antibodies needed to fight the _____
(ill).
The doctor explained the situation to her little brother, and asked the boy if he would be willing to give his blood to his sister. I saw him hesitate（犹豫） for a moment _____taking a deep breath and saying, “Yes, I’ll do it ___
it can save Liz.”
_____the transfusion progressed, he lay in bed next to his sister and smiled, as we all did, ____
(see) the color returning to her cheeks. Then ____
face grew pale and his smile faded. He looked up at the doctor and asked with a trembling voice, “Will I start to die right away?”
Being young, the boy had_____(understand) the doctor; he thought he was going to have to give his sister all of his blood.
One Saturday, Bob decided to take a drive through the countryside. After a few hours, he saw a dog _______ （walk） behind a man on the side of the road. As the car came near them, the dog ___
____ （sudden） jumped into the road. Of course, the car hit the poor animal and killed it.
Bob stopped his car and walked up to the man. “I’m very sorry that this happened,” he said. “Is there ______ （something） I can do? Will $10 help?”
“Oh, but…”said the man. “I should tell you…”
“Stop! You are right. $10 isn’t enough! That dog was your ________ （good） friend!”
Bob reached into his pocket and gave the man $30．Then he thanked the man and drove away. When he was ______（go）, the man looked down at the dog and said : “I wonder whose dog that is?”
阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式，并将答案填写在答题卡相应的位置上。
It is reported that many middle school students are just not getting enough sleep, especially during the school week. The problem seems to get (bad) as they get older. Year 7 students sleep 8.4 hours in a school night, and Year 9 students only 6.9 hours.
It’s also reported that not getting enough sleep can cause ( (problem) in a student’s life. Many students fall
(sleep) in school or while doing their homework, so it is not
(surprise) that they get lower grades than those who get enough sleep. Scientists suggest nine hours a night for middle school students.
Of the students who feel (happy) and nervous, 73% don’t get enough sleep at night.
Why aren’t students getting enough sleep? Many students have one of the (follow) things, like telephone, television, or computer in their bedrooms. Using them on a school night not
(takes their time away from homework, but also makes
difficult for them to sleep. As a result, many students can’t sleep before 11 p.m, yet they must get up early
(go) to school.
Scientists also suggest students should not do exciting activities for an hour bedtime.
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