______in the regulation is that you should not tell other people the password of your e-mail account.

A. What is required  B. What requires  C. It is required  D. It requires

 

Each cell in the human body contains about 25,000 to 35,000 genes, which carry information that determines your traits. Traits are characteristics you inherit from your parents; this means your parents pass some of their characteristics on to you through genes. For example, if both of your parents have green eyes, you might inherit the trait of green eyes from them. Or if your mom has freckles, you might inherit that trait and wind up with a freckled face. And genes aren’t just in humans — all animals and plants have genes, too.

Genes hang out all lined up on thread-like things called chromosomes. Chromosomes come in pairs, and there are hundreds, sometimes thousands of genes in one chromosome. The chromosomes and genes are made of DNA, which is short for deoxyribonucleic acid.

Chromosomes are found inside cells, the very small units that make up all living things. A cell is so tiny that you can only see it through the lens of a strong microscope, and there are billions of cells in your body. Most cells have one nucleus. The nucleus, which is sort of egg-shaped, is like the brain of the cell. It tells every part of the cell what to do. How does the nucleus know so much? It contains our chromosomes and genes. Tiny as it is, the nucleus has more information in it than the biggest dictionary you’ve ever seen.

71. What is the best title of this passage?

A. What Is a Gene?                    B. How Do Genes Work?

C. What Does A Gene Consist of?         D. How Do Nucleus Command Cells?

72. What does the underlined word “inherit” probably mean in the first paragraph?

A. carry          B. send        C. obtain           D. pass

73. Which of the following is NOT true according to the passage?

A. The parents pass some characteristics on to their children.

B. All living things receive traits from the old generations.

C. One’s green eyes might be passed on from the parents.

D.A mother’s freckled face might affect her young’s face.

74. From the passage we can know that______________.

A. genes can decide all your characteristics from parents.

B. genes exist inside cells that make up all living things.

C. genes tells every part of the cell what to do .

D. Chromosomes come in pairs containing genes.

75. From the passage we can conclude that ___________.

A. not all cells have one nucleus inside .

B. not all living things are made up of cells.

C. genes aren’t in humans but in animals and plants.

D. DNA is made of chromosomes and genes.

 

He came home after midnight, and ____, he was drunk. That made his parents very angry.

A. What is more      B. On the other hand  C. In my opinion   D. In another word

In 1980, Candy Lightner's 13－year－old daughter Cad was killed by a drunk driver as she walked down a suburban street in California. “I promised myself on the day of Cad's death that I would fight to make this needless accident count_for something positive in the years ahead，”Candy Lightner later wrote.

The drunk driver received a two－year prison sentence. However, he avoided prison by serving time in a work camp and a halfway house. Ms. Lightner was very angry about that and so organized Mothers Against Drunk Drivers(MADD), which later changed to Mothers Against Drunk Driving. The aim of her organization was to raise public awareness of the serious nature of drunk driving and to promote tough legislation against the crime.

Before Ms. Lightner's MADD, intoxication (醉酒), including drunk driving, was not taken seriously. Intoxication was often used as an excuse for otherwise unacceptable behaviour: “I didn't know what I was doing—I was drunk.”

Candy Lightner appeared on major television shows, spoke before the US Congress, addressed professional and business, groups, and worked tirelessly for years to change public attitudes, change judicial(审判的) behaviour, and promote tough new legislation. Ms. Lightner left MADD because the organization that she herself created is changing its focus. “I didn't start MADD to deal with alcohol. I started MADD to deal with the issue of drunk driving.”

The President of the United States awarded her the President's Volunteer Action Award and she was the subject of the movie “Mothers Against Drunk Drivers: the Candy Lightner Story”．

6. One of the purposes of MADD was to ________.

A. improve drivers' driving skills

B. make new laws against crimes

C. tell drivers to avoid drunk driving

D. warn people not to drink alcohol

7. What does the underlined part “count for ” in Paragraph 1 mean?

A. To be valuable for.      B. To explain.

C. To take the place of.     D. To control.

8. How did Ms. Lightner realize MADD's goals?

a. By talking on TV.

b. By giving a talk to businessmen.

c. By giving suggestions to the US Congress.

d. By applying for a job with the government.

A. a, c, d                  B. a, b, d      C. a, b, c            D. b, c, d

9. We can learn from the passage that________.

A. the drunk driver had not been caught

B. drunk driving didn't receive enough attention before MADD

C. Candy Lightner played a leading role in a film

D. MADD didn't get much support from society

10. What would be the BEST title for the passage?

A. What is MADD?

B. How to stop drunk driving?

C. New law against drunk driving

D. Candy Lightner and her MADD

ROME: The legend of Leonardo da Vinci is covered in mystery: How did he die? Are the remains buried in a French castle really those of the master? Was the "Mona Lisa" a self-portrait in disguise (伪装)?

A group of Italian scientists believe the key to solving those puzzles lies with the remains, and they say they are seeking permission to dig up the body to conduct carbon and DNA testing.

If the skull is undamaged, the scientists can go to the heart of a question that has fascinated scholars and the public for centuries: the identity of the "Mona Lisa." Recreating a virtual and then physical reconstruction of Leonardo's face, they can compare it with the smiling face in the painting.

"We don't know what we'll find if the tomb is opened. We could even just find grains and dust," says Giorgio Gruppioni, an anthropologist who is participating in the project. "But if the remains are well kept, they are a biological record of events in a person's life, and sometimes in their death." Silvano Vinceti, the leader of the group, said that he plans to press his case with the French officials in charge of the said burial site at Amboise Castle early next week.

Leonardo moved to France at the invitation of King Francis I, who named him "first painter to the king." He spent the last three years of his life there, and died in 1519 at age 67. The artist's original burial place, the palace church of Saint Florentine, was destroyed during the French Revolution and remains that are believed to be his were eventually reburied in the Saint-Hubert Chapel near the castle.

"The Amboise tomb is a symbolic tomb; it's a big question mark," said Alessandro Vezzosi, the director of a museum dedicated to Leonardo in his hometown of Vinci. Vezzosi said that investigating the tomb could help identify the artist's bones with certainty and solve other questions, such as the cause of his death. He said he asked to open the tomb in 2004 to study the remains, but the Amboise Castle turned him down.

The group of 100 experts involved in the project, called the National Committee for Historical and Artistic Heritage, was created in 2003 with the aim of "solving the great mysteries of the past," said Vinceti, who has written books on art and literature.

Arguably the world's most famous painting, the "Mona Lisa" hangs in the Louvre in Paris, where it drew some 8.5 million visitors last year. Mystery has surrounded the identity of the painting's subject for centuries, with opinions ranging from the wife of a Florentine merchant to Leonardo's own mother.

That Leonardo intended the "Mona Lisa" as a self-portrait in disguise is a possibility that has interested and divided scholars. Theories have existed: Some think that Leonardo's taste for tricks and riddles might have led him to hide his own identity behind that puzzling smile; others have guessed that the painting hid an androgynous lover.

If granted access to the grave site, the Italian experts plan to use a tiny camera and radar to confirm the presence of bones. The scientists would then exhume (挖掘) the remains and attempt to date the bones with carbon testing.

At the heart of the proposed study is the effort to discover whether the remains are actually Leonardo's, including with DNA testing.

Vezzosi questions the DNA comparison, saying he is unaware of any direct descendants (后代) of Leonardo or of tombs that could be attributed with certainty to the artist's close relatives.

Gruppioni said that DNA from the bones could also eventually be compared to DNA found elsewhere. For example, Leonardo is thought to have rubbed colors on the canvas with his thumb, possibly using saliva (唾液), meaning DNA might be found on his paintings.

Even in the absence of DNA testing, other tests could provide useful information, including whether the bones belonged to a man or a woman, and whether the person died young or old.

Even within the committee, experts are divided over the identity of the "Mona Lisa."

Vinceti believes that a tradition of considering the self-portrait to be not just a faithful imitation of one's features but a representation of one's spiritual identity may have resonated (共鸣) with Leonardo.

Vezzosi, the museum director, dismissed as "baseless and senseless" the idea that the "Mona Lisa" could be a self-portrait of Leonardo. He said most researchers believe the woman may have been either a wife of the artist's sponsor, the Florentine nobleman Giuliano de Medici, or Lisa Gherardini, the wife of a rich silk merchant, Francesco del Giocondo. The traditional view is that the name "Mona Lisa" comes from the silk merchant's wife, as well as its Italian name: "La Gioconda."  

   Where is this passage most probably taken from?

    A. A magazine.  B. A newspaper. C. A textbook.      D. A research report.

   Why does the author ask a couple of questions in the beginning?

    A. To arouse the interest of readers.   B. To puzzle Italian scientists.

    C. To answer the questions himself.     D. To make fun of French officials.

   The best title of this story might be “_____”.

    A. What Is the Purpose of an Investigation?

    B. How Did Leonardo da Vinci Die in France?

    C. Are the Remains Really Those of the Master?

    D. Did Leonardo Paint Himself as 'Mona Lisa'?

The sentence “he plans to press his case with the French officials” (underlined in Paragraph 4) suggests that Vinceti intends to _____.

    A. press the French officials to participate in their project

    B. urge the French officials to open the tomb early next week

    C. persuade the French officials to allow opening the tomb

    D. record events in a person’s life with the French officials

   Which of the following statements is true according to the passage?

    A. Scholars have the same opinion on DNA testing.

    B. Scientists doubt if the remains are those of da Vinci.

    C. The identity of “Mona Lisa” has already been proved.

    D. Alessandro Vezzosi got permission to open the tomb.

   We can infer from the last two paragraphs that _____?

    A. “Mona Lisa” is the name of the wife of a silk merchant

    B. the “Mona Lisa” is a self-portrait of Leonardo da Vinci

    C. experts divided the committee into several groups

    D. opinions differ of the identity of the “Mona Lisa”