C

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 beach

B．increase speed gradually

C．keep its engine running slowly

D．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 direction

B．surround the whales with other boats

C．travel closer and closer to the shore

D．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.