Paragraph ①:( )

• A、The end of riders' business

• B、The fastest message service

• C、The comfortable home station

• D、The effective system to send mail

• E、Safe delivery despite the tough ride

• F、Need of message exchange in the gold rush

第六部分：完形補文（第41～50題，每題1.5分，共15分）

下面的短文有10處空白，每處空白后的括號內有一個詞，請根據短文內容將其正確的形式填入文中，以恢復文章原貌，并將答案寫在答題卡相應的位置上。

Dutch King's Secret Life

Next time you fly, the pilot might (may) be a king. Dutch King Willem-Alexander has 41 (secret) been flying planes twice a month for twenty-one 42   (year).His passengers were 43   (aware) of this. The 50-year-old king 44   (get) his military pilot's license with the Dutch Air Force in his twenties. He loved flying and 45  (become) a commercial pilot. The king is now 46  (train) to fly Boeing 737 because he wants to upgrade his skills.

The king said flying could relieve his pressure. He explained:  "You can't take your problems from the ground into the skies. You can leave them aside 47  (complete)and concentrate on something else. That is the most 48   (relax) part of flying. "He said it was easy to keep his secret. Few people 49  (know) he was their pilot. He always welcomed passengers on behalf of the captain and the crew. So far he has never 50 (tell)passengers his name.

How does Geigl study the spread of cats?（ ）

• A、By following their traces.

• B、By analyzing their statues.

• C、By examining their bones.

• D、By testing their DN