种子园
参考答案：以经过选择的无性系或家系组成的人工林，是用有性或无性方法繁殖人工选择的优良个体或用其他育种法培育出的新品种的植株建立的良种基地。
补全对话（共3小题，每题2分，满分6分）
A: Hello, Nice to meet you!
B: Nice to meet you, too! How long have you been in Zhuzhou?
A: For half a year.
B:小题1:._________________________?
小题1:
A: It is a beautiful city.
B: Why did you come to study here?
A: Because my father got a job here.
B: Oh, 小题2:________________________?
小题2:
A: He is a policeman.
B: Cool, I want to be a policeman, too. How about you?
A: I want to be a singer.
B: 小题3:________________________?
小题3:
A: Because I like singing very much.
是指系统或其组成部分能在其他系统中重复使用的特性。
A．可扩充性 B．可移植性 C．可重用性 D．可维护性
