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    Do’s and Don’ts in Whale(鲸) Watching
    The Department of Fisheries and Oceans has developed guidelines for whale watching in Johnstone Strait, where killer whales are found on a daily basis each summer. It is strongly recommended that vessel(船只) operators follow these guidelines for all kinds of whales.
    · Approach whales from the side, not from the front or the back.
    · Approach no closer than 100 metres, then stop the boat but keep the engine on.
    · Keep noise levels down — no horns, whistles or racing of engines.
    · Start your boat only after the whales are more than 100 metres from your vessel.
    · Leave the area slowly, gradually moving faster when you are more than 300 metres from the whales.
    · Approach and leave slowly, avoiding sudden changes in speed or direction.
    · Avoid disturbing groups of resting whales.
    · Keep at low speeds and remain in the same direction if traveling side by side with whales.
    · When whales are traveling close to shore, avoid crowding them near the shore or coming between the whales and the shore.
    · Limit the time spent with any group of whales to less than 30 minutes at a time when within 100 to 200 metres of whales.
    · If there is more than one vessel at the same observation spot, be sure to avoid any boat position that would result in surrounding the whales.
    · Work together by communicating with other vessels, and make sure that all operators are aware of the whale watching guidelines.
    小题1:64. For whom is this text written?
    A．Tour guides.B．Whale watchers.
    C．Vessel operators.D．Government officials.
    小题2:65. When leaving the observation areas, the vessel should ______.
    A．move close to the beachB．increase speed gradually
    C．keep its engine running slowlyD．remain at the back of the whales
    小题3:66. When going side by side with whales, the vessel should ______.
    A．keep moving in the same directionB．surround the whales with other boats
    C．travel closer and closer to the shoreD．take a good viewing position
    小题4:67. What is the shortest safe distance from the whales?
    A．400 metres.B．300 metres.C．200 metres.D．100 metres.

    小题1:C
    小题2:B
    小题3:A
    小题4:D

    小题1:从第一段最后一句话可知：这些对各种各样的鲸都必须遵守的操作规则被强烈地推荐给船只操作员。
    小题2:从操作规则第四、五条可知：在一百米之外，才能启动船只；三百米之外，才逐渐加速。
    小题3:从操作规则第八条可知：当船只和鲸并排前进时，保持低速且应同一个方向前进。
    小题4:从操作规则第二条可知：靠近鲸不能低于一百米，然后停止，但要让发动机开着。所以最近的安全观察距离应是100米。
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