To help the environment, many Americans have made the change from paper and plastic bags to reusable shopping bags.But a report by a Florida newspaper says that reusable shopping bags sold by some supermarkets have high levels of lead(铅), which can be dangerous to humans, especially young children.Now, there's a call for a rethink about the use of reusable shopping bags.

     “When our families go to the store looking for safe and healthy foods, the last thing they should be worrying about is a bag，”Charles Schumer, a government official said.“Quick and complete research will allow everyone to make right decisions.”

    The newspaper bought more than a dozen bags sold at Publix supermarkets from Florida supermarkets to test them for lead.The results showed that certain bags had lead levels that worried health officials.Some bags had enough lead in them to be considered dangerous waste if people were to throw the bags out with other rubbish.Lead in the bags is not likely to move onto food.But over time, paint (油漆) on the bags can break off and the bags can wear out.When this happens, lead can be freed.

    The affected (受影响的) bags were found in Florida.But Publix has more than 1，000 stores across America.Publix says that its bags don't break any laws about lead levels, but that they have asked the makers of the bags to reduce(降低) the lead levels in them.

    The bags with the highest levels of lead had beautiful designs and many pictures.Plain reusable bags without them are found to have little lead.People worried about lead levels in reusable bags can turn to cloth.Paper bags are also a good choice, since paper can be reused.

    Cultures are based on social and linguistic(语言的) communities.

    In South Africa, we exist amongst diverse groups which are culturally different. This makes us multicultural. Toit, one sociologist in the U.S., explains that multiculturalism is more than the expression of cultural variety, and it also concerns communication. He adds that for multiculturalism to “succeed”, meaningful communication is a requisite.

    In multicultural countries, it is necessary that the education system encourages learners to become interculturally competent (胜任的). The process of becoming intercultural is a “personal transformation” from being cultural to being intercultural. This does not mean that a highly intercultural person's identity is culture-free. Rather, it is not rigidly bound by membership to anyone particular culture. Furthermore for learners to become interculturally competent, it is necessary that all involvers in the education system become aware of their own cultural background.

    Toit conducted a survey, the objective of which was to determine the problems experienced by learners in a multicultural learning environment. Two hundred questionnaires were administered. 55% believed that different values and beliefs were a major cause of the communication problems. Closer examination of the interactions showed that learners were in fact mostly associating with members of their own cultural groups. Toit points out that in an intercultural communication, people would be challenged by the sudden difference in culture, and this may force an evaluation or re-evaluation of their beliefs and values. 45% of the learners believed that there was lack of trust among their peers. The general lack of trust between two complete strangers leads to an uncomfortable situation. They said that when learners are asked to work in groups, they are unwilling to do so. They added that one of the many issues that contribute to such negative opinions was the language barrier.

    Hundreds of years ago, a Roman army came north from England to make war on Scotland. The Scots, a brave people, love their country. They fought hard to drive the enemy out of Scotland. But there were too many of the Romans. It looked as if the Romans would win.

    One night, the leader of the Scots marched his soldiers to the top of a hill. “We will rest here tonight, my men,” he said, “Tomorrow we will fight one more battle. We must win, or we will die.”

    They were all very tired. So they ate their supper quickly and fell asleep. There were four guards on duty, but they were very tired, too, and one by one, they fell asleep.

    The Romans were not asleep. Quickly they gathered at the foot of the hill. Slowly they went up the hill. Closer they came to the sleeping Scots. They were almost at the top. A few minutes more the war would be over. Suddenly, one of them put his foot on a thistle (蓟). He cried out and his sudden cry woke the Scots. In a minute they were on their feet and ready for a battle. The fighting was hard, but it did not last long. The Scots wiped out the Romans and saved Scotland.

    The thistle is not a beautiful plant. It has sharp needles all over it. Few people liked it. But the people of Scotland liked it so much that they made it their national flower.

    Diana Ross, American pop singer and actress, achieved international popularity, first as the leader singer of the Supremes and later as a solo(独唱的) artist. Diana Ross was born on March 26, 1944, in Detroit, Michigan. She was the second of six children of Fred and Ernestine Ross, who lived in one of Detroit's poor districts. Because her family were closely connected with each other, Ross almost didn't notice the difficult life as she grew up.

    Ross professional career began in 1959, when she joined several neighborhood friends to form the Primettes. The group was renamed the Supremes after signing a recording contract (合同) with Motown late the following year. The group produced many number-one hit singles (热门单曲) on the US Billboard hot 100, including Baby Love, Stop! In The Name of Love and Someday We Will Be Together. In 1967, the group was renamed Diana Ross and the Supremes, foreshadowing（预示） Ross' solo career, which she started in 1970.

    Beginning with Ain't No Mountain High Enough from her first solo album, Ross enjoyed more than ten years of great success with her hit singles. Ross also developed a film-acting career in the 1970s, beginning with a starring role as blues singer Billie Holiday in Lady Sings the Blues and continuing with Mahogany, for which she also recorded the theme song Do You Know Where You're Going To.

    However, in the mid-1980s, Ross saw her career begin to wane. Most of her albums were re-recordings of earlier material. In 2006, she produced I Love You, a collection of love songs by many artists, and she started an energetic concert tour the following year to make the album publicly known. Although you can't find her songs on the US Billboard Hot 100 now, Ross remains popular as one of the leading musical performers of all time.

    The baby monkey is much more developed at birth than the human baby. Almost from the moment it is born, the baby monkey can move around and hold tightly to its mother. During the first few days of its life the baby will approach and hold onto almost any large, warm, and soft object in its environment, particularly if that object also gives it milk. After a week or m, however, the baby monkey begins to avoid newcomers and focuses its attentions on “mother" the real mother or the mother-substitute(母亲替代).

    During the first two weeks of its life warmth is perhaps the most important psychological(心理的)thing that a monkey mother has to give to its baby. The Harlows, a couple who are both psychologists, discovered this fact by offering baby monkeys a choice of two types of mother substitutes one covered with cloth 4nd one made of bare wire. If the two artificial mothers were both the same temperature, the little monkeys always preferred the cloth mother. However, if the wire model was heated, while the cloth model was cool, for the first two weeks after birth the baby monkeys picked the warm wire mother-substitutes as their fuvorites. Thereafter they switched and spent most of their time on the mw comfortable cloth mother.

    Why is cloth preferable to bare wire? Something that the Harlows called contact(触摸)comfort seems to be the answer, and a most powerful influence it is. Baby monkeys spend much of their time rubbing against their mothers' skins, putting themselves in as close contact with the parent as they can. Whenever the young animal is frightened, disturbed, or annoyed, it typically rushes to its mother and rubs itself against her body. Wire doesn't “rub" as well as does soft cloth. Prolonged(长时间的)“contact comfort" with a cloth mother appears to give the babies confidence and is much more rewarding to them than is either warmth or milk.

    According to the Harlows, the basic quality of baby's love for its mother is trust. If the baby is put into an unfamiliar playroom without its mother, the baby ignores the toys no nutter how interesting they might be. It screams in terror and curls up into a furry little ball. If its cloth mother it now introduced into the playroom, the baby rushed to it and holds onto it for dear life. After a few minutes of contact comfort, it obviously begins to feel more secure. it then climbs down from the mother-substitute and begins to explore the toys, but often rushes back for a deep embrace(拥抱)as if to make sure that its mother is still there and that all is well. Bit by bit its fears of the new environment are gone and it spends more and more time playing with the toys and less and less time holding onto its “mother.”

    A good modern newspaper is an extraordinary piece of reading. It is remarkable first for what it contains: the range of news from local crime to international politics, from sports to business to fashion to science, and the range of comment and special features as well, from editorial page to feature articles and interviews to criticism of books, art, theatre, and music.

    A newspaper is even more remarkable for the way one reads it: never completely, never straight through, but always by jumping from here to there, in and out, glancing at one piece, reading another article all the way through, reading just a few paragraphs of the next. A good modern newspaper offers a variety to attract many different readers, but far more than any one reader is interested in. What brings this variety together in one place is its topicality(时事性), its immediate relation to what is happening in your world and your locality now. But immediacy and the speed of production that goes with it mean also that much of what appears in a newspaper has no more than transient value.

    For all these reasons, no two people really read the same paper: what each person does is to put together, out of the pages of that day's paper, his own selection and sequence, his own newspaper. For all these reasons, reading newspapers efficiently, which means getting what you want from them without missing things you need but without wasting time, demands skill and self-awareness as you modify and apply the techniques of reading.