单选题

单选题

单选题 The ancient Egyptians compared the rising of the sun ______ the beginning of life.

单选题The small number of newborn babies,which has been caused by high prices and the changing social situation of women,is one of the most serious problems inAsia.When people talk about it,you can hear a w

单选题 One of the industrial giants who changed American society was Henry Ford horn on a farm in Michigan in 1863, and he grew up to bring forth some of the most revolutionary improvements in automotive technology in the early 20th century. His outstanding mechanical ability led him to become interested in the new automobiles in the early 1900s. Though be did not invent the automobile, he improved upon everyone else's designs. He was a person who believed in inexpensive, efficient production, so he established standards for his plants and workers. He also standardized and produced many new auto parts for his Ford Motor Company cars. Then he studied the workers' problems and thousands of automobiles per year. In fact, his plants had produced 15 million Model TS by 1927. Ford's personality was not all thrift (节俭), efficiency and inventiveness, however. He was a man who was cold and who could not keep pace with the competition due to his own rigidity (严格). His company suffered because of his desire to maintain the existing state instead of meeting and beating the competition by changing his products. Finally, he saw that he must change or fail, therefore, he introduced a newtype engine and once again took over the automobile market. Ford left a legacy of millions of dollars, millions of jobs for American workers, and millions of satisfied customers.

单选题 It is the third time that I ______ here.

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单选题 You'd like to take a walk after supper, ______ you ?

单选题 Imagine going to sleep in October and waking up in May! Well, marmots and ground squirrels stay warm by sleeping all winter. All this time, they do not wake up once. This special kind of sleep is called hibernation. During this sleep, the heart slows down, and the animal breathes more slowly, it doesn't move around, so it uses less energy. Animals like the marmot and the ground squirrel inhabit the coldest parts of the world. They need special talents to survive in these frigid places. Their furry coats keep them snug when the temperature falls below zero. It often gets this cold in the Arctic, a land that is just below the North Pole. Before the long winter, some animals eat and eat. After a while, they grow very fat. When the winter comes, they live on the fat saved up in their bodies. Layers of fat keep an animal warm. Arctic animals also have other ways to beat the cold. Rabbits in the Arctic, for example, have very small ears. Small ears keep heat in, while big ears let it out. Small things usually keep heat in. Have you ever slept in a room that is very small, and noticed how hot it can get? It rarely gets warm in the Arctic. But although summer seasons there are very short, the sun shines brightly. Plants seem to spring up before your eyes! Animals such as caribou look forward all year to summer, when they can eat fresh grass again. Every minute of sunshine is important to their lives.

单选题 You can't change your energy cycle, ______ you can learn to make your life fit it better.

单选题 —Thank God! This school term is coming to an end! —Yeah. After all that hard work, we all ______ a holiday.

单选题 Till now the problem is far from ______.

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单选题 I've been taking English lessons for 3 months but I ______ haven't made much progress.

单选题 Those good traditions have been passed ______ the younger generation.

单选题 What he described as a ______ detail I thought was the most important part of the plan.

单选题 You know that's right, ______.

单选题 He ______ somebody creeping into the house through the open window last night.

单选题The small number of newborn babies,which has been caused by high prices and the changing social situation of women,is one of the most serious problems inAsia.When people talk about it,you can hear a w

单选题 Eating in space is different from eating on earth. The food that astronauts carry with them does not look like the food you eat. Some food is carried in closed bags. It is cooked and frozen before the astronauts get it. All the water is removed from the food. In the spaceship the astronaut puts the water back. He 'shoots' hot or cold water into the food bag with a special gun. He eats the food through a small hole in the bag. Other foods come in bite sizes. The astronaut puts a whole piece in his mouth at once. There will be no crumbs. Crumbs would float around the spaceship and get in the way. Meat and cake often come in bite-sized pieces. Astronauts can't drink water from open cups. The water would float in drops in the air. The water is put in the special gun. The astronaut shoots the water into his mouth. Eating in space is not easy. Astronauts must learn to eat this way.