A. In southwest Africa. B. In southeast Africa. C. In southwest Asia. 18. How long was the speaker's journey?

A. Four and a half days B. Five days. C. Five and a half days. 19. How many hours did the speaker walk every day?

A. Five. B. Three. C. Two. 20. What did the speaker think of her journey?

A. It was hard and she would never go there again. 　 B. It was happy and she made a lot of friends. C. It was hard but it raised her confidence. 第二部分 阅读理解（共两节，满分40分）

第一节 （共15小题；每小题2分，满分30分）

　　Lilly and Audrey are younger than most cookbook authors. But they have been developing their kitchen skills for more than half their lives. When they had just learned to walk, they loved to hang out in the kitchen while their parents cooked dinner. At age 5, they made their first dish without help: pumpkin muffins.

　　Audrey can still remember the way the muffins rose in the oven (烤箱), the painful wait for them to cool and the sweetness of the fresh-made treats. "It was super exciting to make something so delicious almost all on our own," she says.

　　Their parents are not very skilled at cooking, so Lilly and Audrey turned to other people for cooking advice. Auspiciously, they live in Sonoma, California, an area that is known for its farms and restaurants. One local cook gave the twins (双胞胎) lessons on cooking techniques, such as how to use knives; those classes taught Lilly and Audrey how to use kitchen tools safely.

　　In 2009, they started a blog (博客), on which they share photos and recipes (菜谱) they have created. Though the twins love creating sweet foods such as muffins, they also think about healthy food. They hope their cookbook will encourage kids to make better food choices by making them more knowledgeable.

"Knowing more about your food and where it comes from certainly causes you to know more about what you eat and to put the best food in your body," Lilly says. That has been true for her. Lilly used to avoid eggplant at all costs, until one day she tried cooking it for herself. Now it's one of her favorite vegetables. "If you make