請依下文回答第 46 題至第 50 題
The Blue Grotto, or Grotta Azzurra, is a noted sea cave on the coast of the island of Capri, Italy. It was discovered by
a German writer in August 1826. Since then it has become a popular tourist attraction. It is said that Roman emperors
used the grotto as a private bath and antique statues were found in there. Inside the grotto, the sea seems to be lit from
underwater. The brilliant blue of the sea fascinates its visitors. The enchantment results from another opening to the
grotto, completely submerged. It allows the sunlight to pass through and light the water from below, creating a blue
reflection that illuminates the cave. To get to Grotta Azzurra, there are motorboats that leave from the port of Marina
Grande. At the entrance to the cave, passengers get into little rowing boats. The roof of the entrance is only one meter
above the sea level so passengers have to lie down in the boat while passing into the cave. The grotto cannot be visited
during adverse weather conditions.
【題組】50 Which of the following statements is true?
(A) Passengers take motorboats into the grotto. (B) The grotto has become famous since the 18th century.
(C) There are two openings to the grotto. (D) The grotto was open to the public in Roman times