【题目】Imagine a mass of floating waste is two times the size of the state of Texas. Texas has a land area of more than 678 000 square kilometers. So it might be difficult to imagine anything twice as big.

All together, this mass of waste flowing in the North Pacific Ocean is known as the Great Pacific Ocean Garbage Patch. It weighs about 3 500 000 tons. The waste includes bags,bottles and containers—plastic products of all kinds.

The eastern part of the Great Pacific Ocean Garbage Patch is about l 600 kilometers west of California. The western part is west of the Hawaiian Islands and east of Japan. The area has been described as a kind of oceanic desert,with light winds and slow moving water currents. The water moves so slow that garbage from all over the world collects there.

In recent years,there have been growing concerns about the floating garbage and its effect on sea creatures and human health. Scientists say thousands of animals get trapped in the floating waste,resulting in death or injury. Even more die from a lack of food or water after swallowing pieces of plastic. The trash can also make animals feel full,lessening their desire to eat or drink.

The floating garbage also can have harmful effects on people. There is an increased threat of infection of disease from polluted waste,and from eating fish that swallowed waste. Divers can also get trapped in the plastic.

Its existence first gained public attention in l997. That was when racing boat captain and oceanographer Charles Moore and his crew sailed into the garbage while returning from a racing event. Five years earlier,another oceanographer learned of the trash after a shipment of rubber duckies got lost at sea. Many of those toys are now part of the Great Pacific Ocean Garbage Patch.

In August,2009,a team from the University of California,San Diego became the latest group to travel to it. They were shocked by the amount of waste they saw. They gathered hundreds of sea creatures and water samples to measure the garbage patch’s effect on ocean environment.

【1】What do we know about the Great Pacific Ocean Garbage Patch?

A. It is made up of various kinds of plastic products.

B. It is a solid mass of floating waste materials.

C. It lies l60 000 kilometers east of California.

D. It is described as a kind of oceanic desert.

【2】Why do people pay attention to the Great Pacific Ocean Garbage Patch?

A. Because it may prevent the flow of ocean water.

B. Because the polluted plastic articles will move up the food chain.

C. Because it may be from an island in the pacific.

D. Because ships may be trapped in the floating waste.

【3】Which column can you find the passage on a newspaper?

A. Sports and entertainment. B. Media and culture.

C. Environment and society. D. Science and technology.

【4】The purpose of writing this passage is to____________.

A. warn people of the danger to travel in the pacific

B. analyze what caused the waste patch in the pacific

C. give advice on how to recycle waste in the ocean

D. introduce the Great Pacific Ocean Garbage Patch

【题目】Unlike chemists and physicists, who usually do their experiments using machines, biologists and medical researchers have to use living things like rats. But there are three Nobel prize-winning scientists who actually chose to experiment on themselves all in the name of science, reported The Telegraph.

1. Werner Forssmann (Nobel prize winner in 1956)

Forssmann was a German scientist. He studied how to put a pipe inside the heart to measure the pressure inside and decide whether a patient needs surgery.

Experiments had been done on horses before, so he wanted to try with human patients. But it was not permitted because the experiment was considered too dangerous.

Not giving up, Forssmann decided to experiment on himself. He anaesthetized (麻醉) his own arm and made a cut, putting the pipe 30 centimeters into his vein. He then climbed two floors to the X-ray room before pushing the pipe all the way into his heart.

2. Barry Marshall (Nobel prize winner in 2005)

Most doctors in the mid-20th century believed that gastritis was down to stress, spicy food or an unusually large amount of stomach acid. But in 1979 an Australian scientist named Robin Warren found that the disease might be related to a bacteria called Helicobacter pylori.

So he teamed up with his colleague, Barry Marshall, to continue the study. When their request to experiment on patients was denied, Marshall bravely drank some of the bacteria. Five days later, he lost his appetite and soon was vomiting each morning he indeed had gastritis.

3. Ralph Steinman (Nobel prize winner in 2011)

This Canadian scientist discovered a new type of immune system cell called the dendritic cell. He believed that it had the ability to fight against cancer.

Steinman knew he couldn’t yet use his method to treat patients. So in 2007, when doctors told him that he had cancer and that it was unlikely for him to live longer than a year, he saw an opportunity.

With the help of his colleagues, he gave himself three different vaccines based on his research and a total of eight experimental therapies(疗法). Even though Steinman eventually died from his cancer, he lived four and a half years, much longer than doctors had said he would.

【1The main purpose of the passage is to ________.

A. present some dangerous experiments that Nobel prize winners did on themselves.

B. list difficulties that scientists went through in order to make important discoveries.

C. explain why some scientists chose to experiment on themselves.

D. introduce a few Nobel prize winners who did experiments on themselves.

【2】 Which of the following is TRUE according to the article?

A. Forssmann’s experiment ended in failure.

B. Forssmann had the pipe pushed all the way into his heart.

C. Barry Marshall succeeded by drinking some Helicobacter pylori.

D. Barry Marshall’s experiment on himself confirmed that most doctors’ belief about gastritis was correct.

【3The underlined word “gastritis” in Paragraph 5 probably means ______.

A. a kind of bacteria B. a kind of stomach disease

C. a new type of therapy D. a large aount of stomach acid

【4From the text, we can conclude that Ralph Steinman ______.

A. discovered a new type of cancer cell called the dendritic cell

B. tried different therapies containing the dendritic cell on himself

C. had his request to experiment on patients denied

D. believed that he was better than doctors at treating cancer

【5Where can we read such a passage?

A. In a newspaper. B. In a poster.

C. In a textbook. D. In a science book.

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