题目

阅读下面短文，从短文后各题所给的A、B、C和D四个选项中。 Mrs. Doyle was a hero. She willbe awarded the Legion of Honor, France's highest decoration, in honor of her in1 helping to liberate thecountry from the Nazis. Mrs. Doyle was one of thefemale agents 2 for the Special Operations Executive (SOE).She engaged in gathering 3 ahead of the D­Day landings. It wasn'tuntil after my first round of 4 that I was told to become a member ofit, she said in a rare interview. We 5 how to get in a high window, and how to climbover roofs without being 6,she recalled. After the trainin人类和其他生物共同生活的唯一家园、地球上最大的生态系统是 A．海洋生态系统      B．森林生态系统 C．湿地生态系统     D．生物圈