( )与云海、日出、夕阳被称为“天象六景”。 A．雾凇 B．雨凇 C．宝光 D．蜃

阅读理解。

                                                 Get Your Degree at Home!

     Have you ever wondered what a degree might be worth to you in your job or career? It means a lot

of Americans with an Associate Degree average nearly $10,000 more in yearly earnings than those with

just a High School Diploma.(毕业证)

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to master your training and move ahead to a new career is included in the low tuition(学费)price you pay.

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     Nearly 2,000 American companies-including General Electric, IBM, Mobile, General Motors, Ford,

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     Simply fill in your name and address on the coupon(登记表)above. Then, write in the name and

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     www.harcourt-learning.com <http://www.harcourt-learning.com>

     E-mail: harcourt@learning.com mailto:harcourt@learning.com

1. What kind of people will probably answer this advertisement?

A. College students preparing to work in some big companies.

B. College students preparing to study for a degree.

C. High school graduates preparing to have at-home training.

D. High school graduates who aren't accepted by colleges.

2. With Harcourt, people can get a Specialized Associate Degree by ______.

A. doing full-time learning at school

B. joining the classes

C. studying in their spare time

D. staying at home

3. Harcourt training has NOT been used by ______ for its employees.

A. General Motors

B. Harvard University

C. General Electric

D. Mobile

4. How can you contact Harcourt Learning Direct?

A. By sending an E-mail.

B. By visiting the office on weekdays.

C. By making a call on weekdays only.

D. By sending a letter not later than today.

农业上常用的氮肥，主要有硫酸铵、碳酸氢铵、硝酸铵等铵盐。铵盐有“三解”，请填写下列空白：

(1)铵盐的溶解：铵盐____于水。

(2)铵盐的热解：铵盐____易分解。①氯化铵受热分解的化学方程式：_____________________， ②碳酸氢铵受热分解的化学方程式：___________________。

(3)铵盐的碱解：任何铵盐遇碱共热都产生_________，这既是实验室制_________的方法，也可用于____的检验，离子方程式为____________________。

保育员的职责。

固定资产的账面价值是固定资产原值扣减（）后的金额。

A．累计折旧和累计减值准备

B．预计净残值和累计减值准备

C．累计折旧

D．预计净残值