关系模型中最普遍的联系是（ ）。A．①②③ B．①②④ C．①②⑤ D．①②⑥

单词拼写：根据中文意思或首字母写出正确的单词。

1. Please keep warm in winter or you may get a c________.

2. They watched a dolphin s__________ yesterday.

3. You don't need to help him p_________ the banana.

4. If you have a toothache, you go to see a d_________.

5. I need two s_______ of bread first.

6. A man named Sandwich made s___________ many years ago in America.

7. Please p______ the milk into the blender.

8. She's much more a_________ than her siser.

9. I want to b________ a singer in the future.

10. He worked for a long time and r_________ last week.

11. Now he is much ____(富有)than before.

12. The _________(游客) are visiting the aquarium.

13. To keep __________(健康), she exercises every day.

14. They all want to be ____________(工程师).

15. Can you play _________(网球) with me?

16. Circle Theater has much _____________(舒适的) seats.

17. I will have a __________ (钢琴) lesson tomorrow?

18. They will go ___________(观光) next month.

19. She is on __________(假期) with her parents.

20. You __________(折叠) your clothes by yourself.

患者，女，46岁，胸闷气短1月，伴全身乏力，咳嗽，发热。胸片示：中上纵隔增宽，右缘呈波浪状改变。白细胞：8.5×10/L。

当病人出现声音嘶哑时，提示肿瘤已侵犯()

A．声带

B．迷走神经

C．喉上神经

D．喉返神经

E．气管隆突

This is _______ difficult problem that few students can work it out.

A．so

B．so a

C．such

D．such a

提出成年期“心理的延缓偿付期”的是（）。

A.科尔伯格

B.弗洛伊德

C.艾里克森

D.塞尔曼

E.皮亚杰

下面程序段是创建一个Date类的对象并把它串行化保存到文件中，该对象表示的是运行时刻的日期及时间，请将程序补充完整。 import java.util.*: import java.io.*; public class SefializeDate{ Date d;SerlalizeDate() { d=new Date();try{ FileOutputStream f=new FileOutputStream("date.ser"); ObjectOutputStream s=new ObjectOutputS~eam(f); 【13】 f. close();} catch(IOException e) { e.prlmStackTrace();} } public static void main(String args[]){ SerializeDate b=new SefiatizeDate(); System.out. prinfln("The saved date is:"+b.d.toString()); } }