男，56岁。反酸、胃灼热5年，胃镜检查：食管下段黏膜多发条形破损，相互融合。该患者首

属于二次污染物的是

A．镉

B．铬

C．甲基汞

D．四乙基铅

E．亚硫酸酐

某银行数据库中，信贷额度关系模式为Credit-in(用户账号，信贷额度，已用金额，信誉指数)，用户关系模式为User(用户账号，用户姓名，地址，电话)。

• a．查询每个用户还能使用的剩余金额的SQL语句为：

  SELECT 用户账号，用户姓名， (1)

  FROM Credit-in，User

  WHERE (2) ；

• b．查询用户地址包含“科技二路”的用户姓名及电话的SQL语句为：

  SELECT 用户姓名，电话

  FROM User

  WHERE (3) ；

• c．将信誉指数大于60的用户的信贷额度上调10%的SQL语句为：

  UPDATE Credit-in

  (4)

  WHERE (5) ;

1（）

A．"信贷额度—已用金额" as 剩余金额

B．信贷额度—已用金额 as 剩余金额

C．“信贷额度—已用金额" at 剩余金额

D．信贷额度—已用金额 at 剩余金额

阅读下面的短文，然后按照要求写一篇150词左右的英语短文。

     As we all know, life is full of dreams and having a good dream is of great importance in our daily life.

Without a good dream, people can't make progress; without a good dream, countries can't develop;

without a good dream, the world can't become so beautiful! And I hold the strong belief that everyone,

whether he is old or young, poor or rich, junior or senior, does have a good dream! After all, dreaming

is certainly a positive part of our life, and wishing for good things, however, costs nothing!

     What's more, it is important to fly our dreams, especially for those who are Senior 3 students. It is

high time for them to fly their dreams. If they can't let out dreams fly, the dream would just be a dream,

not reality!

     Therefore, it is no wonder that so many people have a dream since their childhood. With a nice

dream, China succeeded in hosting the 29th Olympic Games in 2008; with a nice dream, Hong Kong

returned to the motherland peacefully in 1997; with a nice dream, Yuan Longping rids the world of

hunger; with a nice dream, Michael Jordon becomes the most popular basketball star; with a nice

dream, I can stand on this stage to compete in the final English speech contest. And with an aim of

achieving success, I must do the best!

     So my good friends, if you want to realize your dream, please do not be afraid in face of difficulties

or give up in face of failure nor lose your dream in face of pains. You must keep going forward bravely!

Just fly your dream highly above the sky!

[写作内容]

1. 阅读短文后用30词左右概括短文的要点。

2. 以“放飞梦想”为主题，以120词左右发表自己的看法，并包括以下内容要点：

(1)列举自己或现实生活中中学生梦想成真的一件事；

(2)结合自己的实际，谈谈你现在的梦想，并说明打算如何实现。

[写作要求]

1. 在作文中可以使用亲身经历或虚构的故事，也可以参照阅读材料的内容，但不得直接引用原文中的句子；

2. 作文中不能出现真实姓名和学校名称。

[评分标准]

概括准确，语言规范，内容合适，篇章连贯。

认知方式差异主要表现为哪几种认知类型方面（）

A.冲动型与沉思型

B.系列型与同时型

C.场独立性与场依存性

D.内向型与外向型

E.宗教型与经济型

动作电位峰值接近于下述哪一种离子的平衡电位（）

A、Ca2+

B、K+

C、Na+

D、Cl-