In which of the following situations is the teacher playing the role of observer？A.Giving

ue?

A.Meaningful practice aims at form. accuracy.

B.Meaningful practice focuses on the production and comprehension of meaning.

C.There is no clear cut between mechanical and meaningful practice.

D.Practice based on prompts is usually considered as meaningful practice.

their existing knowledge and communicate with others using the information in the listening text. This description belongs to__________stage.

A.pre-listening

B.while-listening

C.post-listening

D.none of them

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A.Precipitation.

B.Rain and snow.

C.Formation of ice.

D.Addition of water by rivers.

by__________. 查看材料

A.melting of sea ice

B.precipitation

C.evaporation

D.supplement of salt

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 salinity than it did before the ice appeared. Of course， when this ice melts， it will tend to decrease the salinity of the surrounding water.

In the Weddell Sea， the densest water in the ocean is formed as a result of this freezing process， which increases the salinity of cold water. This heavy water sinks and is found in the deeper portion of the oceans of the world.

This passage mainly tells us about__________. 查看材料

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

Which of the following is a communicative activity?

A.Listening to the news report and talking about an event.

B.Listening to the news report and filling in a form.

C.Listening to the news report and writing the main idea.

D.Transferring the information from the news report into a chart.

However important wealth is， it should not become our __________in life.

A.focus

B.sense

C.conflict

D.conscience

Lucy is great to work with. I really couldn‘t find a __________ partner.

A.better

B.good

C.worse

D.bad

e battery.

A.complex

B.temporary

C.exclusive

D.fragile

根据题目要求完成下列任务，用中文作答。

下面是某教师的课堂教学片段：

片段一：

T: Look at the sentences and fill in the blanks with "that" and "what".

（1） She is no longer she used to be.

（2） I lived in you call "Ancient Greece".

（3） The result is he lost the game.

（4） Everybody knows he wants to go abroad.

（5） Many people don‘t know is the true happiness.

Ss: （Do the job.）

T: Now let‘s check the answers. （Check the answers and analyze each sentence.）

T: Now please answer the following questions.

Q1: What sentence component does "that" act in the clause?

Q2: What sentence component does "what" act in the clause?

Ss: （Discuss in pairs， think and conclude the rules.）

片段二：

T: Good! Here is the rule. Who can give us more examples to show the rules?

Ss: ...

T: Now look at the picture and make sentences

I: By using object and Dredict iive clauses.

请根据所给材料回答下列三三个问题。

（1）这是课堂教学的哪两个环节?该教师在这两个阶段分别采用_『哪两种语法教学方法?

（6分）

（2）该教师在第二个环节中使用了哪种语法操练方法?清作出简要评析．（12分）

（3）除片段中该教师采用的操练方法外，语法操练还有哪些其他谚’式?清简要分析（12分）