请阅读短文，完成第题。When we analyze the

请阅读短文，完成第题。

When we analyze the salt salinity（盐溶度） of ocean waters， we find that it varies only slightly from place to place. Nevertheless， some of these small changes are important. There are three basic processes that cause a change in oceanic salinity. One of these is the subtraction of water from the ocean by means of evaporation. In this manner， the salinity is increased， since the salt stays behind. If this is carried to the extreme， of course， white salt would be left behind; this， by the way， is how much of the table salt we use is actually obtained.

The opposite of evaporation is precipitation， such as rain， by which water is added to the ocean. Here the ocean is being diluted so that the salinity is decreased. This may occur in areas of

high rainfall or in coastal regions where rivers flow into the ocean. Thus salinity may be increased by the subtraction of water by-evaporation， or decreased by the addition of fresh water by precipitation.

Normally， in hot regions where the sun is very strong， the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation. Similarly， in coastal regions where rivers dilute the sea， salinity is somewhat lower than in other oceanic areas.

A third process by which salinity may be altered is associated with the formation and melting of sea ice. When seawater is frozen， the dissolved materials are left behind. In this manner， seawater directly beneath freshly formed sea ice has a higher s
A.the analysis of the salinity of ocean waters
B.the causes of the variation in oceanic salinity
C.the importance of the changes in oceanic salinity
D.the different forms of salts in ocean waters

参考答案

: 根据提供的信息和语言素材设计教学方案。用英文作答。
设计任务：请阅读下面学生信息和语言素材，设计一节听力课的教学方案。教案没有固定格式．但须包含下列要点：
teaching objectives
teaching contents
key and difficult points
major steps and time allocation
activities and justifications
教学时间：45分钟
学生概况：某城镇普通中学七年级（初中一年级）学生，班级人数40人，多数学生已经达到《义务教育英语课程标准（20i l年版）》二级水平，学生课堂参与积极性一般。
语言素材：
Listen and match the memory with the person.
__ Mary a. used to be scared of a teacher with high standards.
__ Frank b. remember losing a schoolbag.
__ Sarah c. remembers meeting this group of friends.
__ Peter d. has enjoyed every year of junior high school.

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: 根据题目要求完成下列任务，用中文作答。
以下是两位教师为学生布置的作业：
Teacher 1
Step 4: Homework
1. Write new words and phrases on the notebook.
2. Finish exercise 3 on Page 21. （Text book）
3. Finish exercises on Page 20-24. （Exercise book）
Teacher 2
Step 4: Homework
1. Find some relative information about today‘s lesson on the Interact.
2. Share your findings with your group members and present to the whole students next class.
请根据所给材料回答下面3个问题。
（1）分析两位教师布置作业的特点，并指出其不足之处。（10分）
（2）教师的作业设计有哪些注意事项。（至少从四个方面）（12分）
（3）列举几种常见的英语作业形式。（8分）

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: 根据题目要求完成下列任务，用中文作答。
任务型教学是新课标所倡导的一种教学模式。你认为这种教学模式与传统的英语教学方法在哪些方面有着明显的不同?（20分）

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: In English teaching， teachers should NOT pay attention to__________.

A.providing independent learning and communicating opportunities for students
B.correcting students" mistakes and errors in the process of learning immediately
C.encouraging students to discuss， cooperate， experience， practice， and explore the way to master English
D.cultivating students" interest

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