第38至40題為題組
       No trip to the Netherlands is complete without a visit to Maastricht, a lovely city in the south.Unlike the rest of the country, the area around Maastricht is quite hilly with low mountain passes.You won’t find windmills here, but you will find beautiful architecture, delightful food, andfriendly people who speak several languages.
       Founded in 50 B.C., Maastricht is the Netherlands’ oldest city. Its ancient walls and towerscan best be viewed while enjoying a boat ride on the Maas River, which divides the city into twomain districts. Because of Maastricht’s strategic location, it has had to defend itself against armiesmany times over the years. Yet it has never suffered severe damage, so its old sites are still intact.
      For a unique experience, take a tour of the St. Pietersberg Caves. The caves were createdwhen rocks were dug out of Maastricht’s hills long ago and used for building purposes. During atour, you can learn about the many different purposes the caves have served over the years. You canalso see a chapel and painting on the walls, and learn why the cool caves are ideal for growingmushrooms.
38. Why are there no windmills in Maastricht？
(A) Because of all the ancient battles
(B) Because the city is in the south
(C) Because of the hills and valleys
(D) Due to all the caves and towers