选用方框中的句子完成对话，其中有两项是多余的。Li Lei: Excuse me

查询所有选修了“计算机网络”的学生成绩，结果显示该学生的“姓名”、“系名”和“数据库原理”的“成绩”，并按成绩由高到低的顺序排列，下列语句正确的是( )。

A．SELECT 学生.姓名,学生.系名,成绩.成绩 FROM 学生,课程,成绩; FOR 学生.学号=成绩.学号; AND 课程.课程编号=成绩.课程编号; AND 课程.课程名称="计算机网络"; ORDER BY 成绩.成绩 DESC

B．SELECT 学生.姓名,学生.系名,成绩.成绩 JOIN 学生,课程,成绩; ON 学生.学号=成绩.学号; ON 课程.课程编号=成绩.课程编号; AND 课程.课程名称="计算机网络"; ORDER BY 成绩.成绩 DESC

C．SELECT 学生.姓名,学生.系名,成绩.成绩 FROM 学生,课程,成绩; WHERE 学生.学号=成绩.学号; OR 课程.课程编号=成绩.课程编号; OR 课程.课程名称="计算机网络"; ORDER BY 成绩.成绩 DESC

D．SELECT 学生.姓名,学生.系名,成绩.成绩 FROM 学生,课程,成绩; WHERE 学生.学号=成绩.学号; AND 课程.课程编号=成绩.课程编号; AND 课程.课程名称="计算机网络"; ORDER BY 成绩.成绩 DESC

阅读下面短文，写出括号中所给单词的正确形式，使短文意思完整。

Dear Dad,

      The day before yesterday was Father's Day. I couldn't celebrate it for you because I was busy taking

the high entrance exam. But I have said  "I love you, Dad!" in my heart many times.

     You are an ordinary (普通的) man, but in my eyes, you are the 1. _____ (great ) father in the world.

Every time I have trouble, you always give me advice and help me out. I remember once I 2. _____ (fail)

in a competition, and I felt very upset. Instead of complaining, you just said to me 3.______ (quiet),

"It doesn't matter. A real man must learn to face many failures (失败) in life bravely. Cheer up!"

     Dad, I am not going to buy you anything as a present because I don't think it express my thanks to you.

I'll try my best to get good 4. _____ (grade). I think that is the best present you are looking forward to

5. _____(get). I'm sure I won't let you down. Hope my dear dad is healthy forever.

1.______ 2.______ 3.______ 4.______ 5.______

“良能、良知、良心”这是（）提出来的主张。

A.荀子

B.孔子

C.孟子

D.老子

春季卡他性结膜炎可应用（）

A．泼尼松滴眼剂

B．四环素

C．醋酸可的松

D．利巴韦林滴液

E．碘苷滴眼液

737-700/800起落架转换活门有（）种方式可以使其工作。

A.1

B.2

C.3

D.4