Voyage to Antarctica Antarctica is not an easy place to get to, but increasing numbers of people visit Antarctica every year

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问题                    Voyage to Antarctica
    Antarctica is not an easy place to get to, but increasing numbers of people visit Antarctica every year. People join the organized voyage guided by experts that are a mixture of seasoned seafarers, and ice or wildlife experts.
    Passenger ships of many different sizes sail to Antarctica. The choice of ship can make a big difference to your journey and experience.
    First of all, Antarctic voyages are not like the other, more well-known, trips to warmer climates that have discos and other types of entertainment. The larger the ship, however, the more likely it will be that entertainment is provided.
    What you will find on the voyage are a number of experienced cruise guides working on the ship. They will tell you about various aspects of Antarctic history and natural history.
    Rules made by the International Association of Antarctic Tour Operators (IAATO) cover such things as the size of the cruise ship allowed to enter Antarctic waters and also personal conduct at landing sites in Antarctica. This is a voluntary organization and it is well respected. You should always make sure that the ship / tour company you use to go to Antarctica is a member of the IAATO. One of the main rules that will affect your visit is that only 100 passengers at any one time may be landed in any one place in Antarctica. If you are on a small ship of up to 100 passengers, then you have the chance to go ashore every time. If the ship is larger, then there will be less opportunity for landings. Surprisingly, though, there are a number of people who go to Antarctica and never leave the ship: the choice is obviously yours.
We can infer from the passage that the IAATO______.

选项 A、manages all ships and landing sites in Antarctica
B、makes money from the coming and going of ships
C、only gives permission to enter the Antarctic to its members
D、can help to protect the environment in Antarctica

答案D

解析 推断题。A选项中的aU和C选项中的only都过于绝对, 文中并没有这么绝对的说法;B选项没有提及;虽然文中并未提及环保话题, 但是强调船上人数的限制, 实际就是在暗示之所以控制人数, 目的就在于保护南极的环境不受到破坏。
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