C

Have you ever dreamed of visiting a planet in the Milk Way? While the trip sounds exciting, it would take years and years to reach your destination. So in the future, bedtime for astronauts may be more than a few hours of regular shut-eye. They would have to sleep for years.

European researchers are now conducting hibernation experiments. The study may help them understand whether humans could ever sleep through the years it would take for a space flight to distant planets. "If there was an effective technology, it could make deep-space travel a reality," said Mark Ayre of the European Space Agency last month.

What seems like science fiction is not completely unlikely. Researchers have been able to use chemicals to put living cells into a sleep-like state where they don't age. They have now moved on to small, non-hibernating mammals like rats. The results will be out by the end of 2004.

A major challenge is the fact that cells can be very simple systems, whereas body organs are far more complex.

"It's like moving from a simple Apple computer to a supercomputer," said Marco Biggiogera, a hibernation researcher at Italy's University of Pavia.

Just like bears and frogs, the hibernation of human beings would cause a person's metabolism (新陈代谢) to lower so they would need less energy.

Medical research, however, is just half of a space flight hibernation system.

There is the challenge of designing a suitable protective shelter. Such a shelter would provide the proper environment for hibernation, such as the proper temperature. It would also have to monitor (监控) life functions and serve the physiological needs of the hibernator.

According to Ayre, the six-person Human Outer Planets Exploration Mission to Jupiter's moon (木星的卫星) Callisto, could be an opportunity to use human hibernation. The mission aims to send six humans on a five-year flight to Callisto, where they will spend 30 days, in 2045.

64. European researchers are conducting hibernation experiments to ________.

A. ensure astronauts to get a complete sleep

B. find the secret of some creatures

C. make preparations for the journey to Jupiter’s moon Callisto

D. know if man can sleep for years

65. The sentence “What seems like science fiction is not completely unlikely” means ________.

A. Science fiction is people’s imagination.

B. Science fiction is imaginative, but it can be realized.

C. Things seem impossible may come true.

D. Things described in science fiction are sure to become true.

66. The passage is implied but doesn’t states that ________.

A. putting living cells into a sleep-like state is full of failure

B. Biggiogera is confident with the experiment

C. human’s hibernation needs no energy

D. medical research is the key to space flight hibernation system

67. By designing a suitable protective shelter, astronauts can ________.

A. have a good hibernation

B. lessen the pressure of traveling in space

C. feed themselves in spaceship

D. moinitor their body changes

68. What’s the best title for the passage?

A. Six humans to fly to Callisto

B. Human hibernation improves health

C. Space travel attracts people

D. Deep sleep for deep space travel

                                                                                          D

To Chinese immigrants, in the mid-1800s, California was “The Land of the Golden Mountain.” In their homeland they had heard the words, “There’s gold in California.” They sailed 7,000miles to join the gold rush and strike it rich. Between 1849 and 1882, more than 30,000 Chinese came to California. Most were men. They had been farmers in China. They came here to be miners and laborers. They ended up doing many other jobs, too.

Like many other immigrants, they did not plan to stay in America. They came because of their ties to their homeland and their families. They planned to return to China with their fortunes and help their families.

Only a few Chinese gold miners struck it rich. Most picked over the areas that had been mined already. But still, white miners resented the Chinese. Slowly, they drove the “yellow peril” from the mining camps.

By the end of the 1850s, many Chinese returned home. Those who stayed found other jobs.

Few women had come west in the gold rush. The Chinese saw a good business opportunity. They began doing the jobs women would have done. Many became house servants. Many more opened laundries.

The Chinese opened restaurants. Chop suey and show mein are popular Chinese-American dishes. The Chinese probably created these dishes to serve to the white miners.

Other Chinese became fishermen, farmers, and even cigar makers.

69. Why did Chinese go to America in the mid-1800s?

A. Because they could find good jobs there.

B. Because they had found gold there.

C. Because they could open laundries and restaurants there.

D. Because they heard there was gold there.

70. The underlined word “resented” mean “________”.

A. liked                        B. helped                     C. hated                    D. served

71. Which should be the title of the passage?

A. Early Chinese immigrants in America

B. Dream to strike it rich

C. The difference between men and women

D. Gold miners in America

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