解释词语
①莫名其妙____
②从从容容____
③语重心长____
①新鲜的全脂或脱脂乳和糖混合 ②冷却（42～43℃）
③热处理（煮沸） ④发酵（放在室内温暖的地方数小时）
⑤接种并盖严盖子（加入一些购买的酸奶） ⑥冷藏或食用
从方框中选择最佳选项完成对话, 有两项多余。
A. Are these your parents?
B. Who is the boy on the left?
C. What’s your father’s job?
D. What’s this?
E. Is your mother a teacher?
F. Is this beautiful girl your sister?
G. What’s your father’s name?
Li Lei—L; Mary—M
L: Good morning, Mary.
M: Good morning, Li Lei.
L: ____
M: It's a photo of my family.
L: Oh. ____
M: Yes, she is. Her name is Lily.
M: Yes, they are.
M: He is a doctor.
M: No, she is a nurse.
下列有关泡菜制作过程的叙述，不正确的是（ ）
