Most people around the world are right-handed. This also seems to be true in history. In 1799, scientists studied works of art made at different times from 1,500 B.C. to the 1950s. Most of the people shown in these works are right-handed, so the scientists guessed that right-handedness has always been common through history. Today, only about 10% to 15% of the world's population is left-handed.

Why are there more right-handed people than left-handed ones? Scientists now know that a person's two hands each have their own jobs. For most people, the left hand is used to find things or hold things. The right hand is used to work with things. This is because of the different work of the two sides of the brain. The right side of the brain, which makes a person's hands and eyes work together, controls the left hand. The left side of the brain, which controls the right hand, is the centre for thinking and doing problems. These findings show that more artists should be left-handed, and studies have found that left-handedness is twice as common among artists as among people in other jobs.

No one really knows what makes a person become right-handed instead of left-handed. Scientists have found that almost 40% of the people become left-handed because their main brain is damaged when they are born. However, this doesn't happen to everyone, so scientists guess there must be another reason why people become left-handed. One idea is that people usually get right-handed from their parents. If a person does not receive the gene (基因) for right-handedness, he / she may become either right-handed or left-handed according to the chance and the people they work or live with.

Though right-handedness is more common than left-handedness, people no longer think left-handed people are strange or unusual. A long time ago, left-handed children were made to use their right hands like other children, but today they don't have to.

Here are four clothing stores.

Notes: £ means the cheapest; £ £ £ £ means the most expensive;

★ means friendly; ★★★★ means the friendliest

    Americans think much about time. From childhood they learn to {#blank#}1{#/blank#} time. They are taught to be on time to go to school, to work and to do everything. When they are having a good time, they time goes easily. When a person is dying, they say he is living on borrowed time.

    Time is money. Time is knowledge. Time is {#blank#}2{#/blank#}in America. A working American has to work hard for eight hours a day or forty hours a week. This is the working time. In his free time, he also works hard for more money. Even on Saturday and Sunday he also works hard as {#blank#}3{#/blank#}. In the street you can hardly see a man walking{#blank#}4{#/blank#}. They walk very fast. In fact, they are running.

    They love time because time can bring them money and lots of things.{#blank#}5{#/blank#}sometimes they also hate time, because they feel they have become servants of the clock.

阅读下列短文, 从下面每个小题的A、B、C、D四个选项中选出最佳选项。

A study conducted by the University of Leeds in the United Kingdom suggest that watching cute animals may lead to a reduction in stress and anxiety.

The study examined how watching images and videos of cute animals for 30 minutes affects blood pressure, heart rate(心率) and anxiety. In December 2019, 19 people, including 15 students, joined in the study.

"There were some kittens, there was puppies, there were baby gorillas, there were quokkas —cute creatures found in Western Australia, are often referred to as 'the world's most cheerful animals'." Dr. Andrea Utley, a professor at the University of Leeds told CNN. The study was timed during winter exams, a time when stress is at an especially high level for students, according to Utley.

 The study recorded that the average blood pressure dropped from 136/88 to 115/71, which the study pointed out is "within ideal blood pressure range." Average(平均的) heart rates were lowered to 67.4 bpm, a reduction of 6.5%. Anxiety rates also went down by 35%.

"I was quite pleasantly surprised that during the session, every single measure for every single participant dropped some — heart rate reduced, blood pressure reduced," Utley said. "When they left, they filled the questionnaire(调查问卷) in again and showed that they were feeling less worried."

When questioning the participants, the study found that most preferred video clips over still images, particularly of animals interacting with humans.

When somebody thinks of traveling, one of the first things that come to his mind is the beach. Beaches are among the favorite destinations (目的地) of many people. Here is a list of some must-see beaches.

Kauna'oa Bay, Hawaii

An amazing place in Hawaii, Kanuna'oa Bay is a crescent-shaped (月牙形的) beach that is famous for its clear, blue water and palm trees along its shores. This beach is best for travelers who love sunbathing, swimming and surfing. Located on this island is a historical hotel which gives the beach "Mauna Kea Beach" as its nickname (绰号).

Langkawi, Malaysia

Also known as "the land of one's wishes", the island of Langkawi is one of the best in Malaysia. It is known for white sand beaches with sandy bays (海湾). The beaches are also surrounded (围绕) by mountains of green forests.

St. Barts, France

Located in the Caribbean Sea, St. Barts is a world-class beach that is famous for its sand and greenish-blue waters. Rocks surround and protect the island as well as provide one of the best diving (潜水) opportunities for tourists. The beaches are rarely crowded, so it is perfect for travelers. It is one of the most visited places by rich travelers because of its beauty.

Fraser Island, Australia

This heritage (遗产) island in Queensland, Australia is a World Heritage site that is known to be the largest sand island in the world. It is also popular for its sand dunes (沙丘), forests and plants near its shores. The dunes are surrounded by grass and plants. This sand island is thought to be a paradise by tourists.

When I was about ten, I was woken up by the shouts（喊声）of my sister one morning. She was hungry, but my mother wasn't at home, so I made a banana cake for her. Let me share the recipe with you.

What you need:

2 eggs  3 bananas  2 cups of flour(面粉)

2 spoons of baking powder(发酵粉)

1/4 spoon of baking soda (小苏打)

1/2 spoon of salt

2/3 cup of sugar

1/3 cup of vegetable oil(油)

What to do:

l  Mix(混合) together the flour, baking powder, baking soda and salt in a large bowl.

l  Add the vegetable oil. Then add a little sugar, and stir (搅拌) it.

l  Pour the eggs into the bowl and stir them well.

l  Add the bananas and stir them.

l  Turn the oven to 180℃.

l  Pour them into the oven（烤箱）. Bake（烘焙） the cake for 20 minutes.

l  Get the cake out of the oven, and cut it into pieces to eat.