pen to time when you travel because _______
A.no day really has twenty-four hours
B.the earth is divided time zones
C.time zones are not all the same size
D.no one knows where time zones begin
47.The time difference between two neighboring zones is ________
A.one day B.twenty-five hours
C.one hour D.twenty-three hours
48.According to paragraph 2, it seems true that the Atlantic Ocean______
A.is one time zone
B.is divided five time zones
C.is divided twenty-four time zones
D.cannot be crossed in five days
49.If you cross the ocean going east, you set your clock______
A.ahead one hour in each new time zone
B.ahead one hour for the whole trip
C.back one hour in each new time zone
D.back one hour for the whole trip
50.The International Date Line is the name for ______
A.the beginning of any new time zone
B.any point where time changes by one hour
C.the point where a new day starts
D.any time zone in the Pacific Ocean
Directions: This task (No.51 to 55) is the same as Task1
Today almost 70% of the electrical power we use comes from power plants that use fossil fuels (矿物燃料) to make electricity. Fossil fuels, such as oil, coal, and natural gas, are burned to make electricity. Burning fossil fuels releases pollution and carbon dioxide gas (CO2) the air. The more fossil fuels we burn, the warmer the air around Earth gets. So building fossil fuel plans is not always the best answer.
Actually, there are other ways to make electricity without burning fossil fuels. People have been using the power of wind for centuries. Wind power won’t solve all our energy problems, but it can help meet some of the demands in certain places. Since the late 1800s, scientists have been working to turn the sun’s energy electricity by using solar cells (太阳能电池). The problem is, solar cells are very expensive. Another way to make electricity is to use nuclear energy. It has been used for more than 50 years. Today about 10 percent of all the electricity used in the U.S.A. comes from this source.
Although nuclear power doesn’t pollute the air as the burning of fossil fuels does, there is a major drawback . The waste products from nuclear power plants are dangerous and must be stored in safe places. Many people are concerned about the safety of nuclear power.
51.The best title for this passage may be ________
A.The Importance of Electricity
B.The Pollution of Making Electricity from Fossil Fuels
C.The Advantage of Using Nuclear Energy
D.Means of Making Electrical Power
52.Which energy has damage to us according to the passage?
A.Wind power B.Fossil fuels
C.Solar power D.Water power
53.We can infer from the passage that _________
A.burning fossil fuels to make electricity is widely used
B.wind power is a widespread way to make electricity
C.energy problems will soon be solved
D.nuclear energy will solve all the energy problems we are facing
54.What does the underlined word “drawback”(in Para.3)mean?
A.effect B.advantage C.disadvantage D.concern
55.Which of the following statements is TRUE according to the passage?
A.Fossil fuels should be encouraged to use to make electricity
B.Not all the areas could use wind power.
C.Solar energy costs the most
D.Using nuclear energy will not produce negative effect.
Directions: This task (No.56 to No.60) is the same as Task 1.
A new study by the Development of Health in Taiwan shows that more than half of the adult population in Taiwan lacks an understanding of health problems.
More than 2,000 adults took part in the survey to find out about their knowledge of diet, health-care, disease control and medicine. Surprisingly, only 51% of the people surveyed understand that common cold has no cure, and taking medicine is absolutely no