Sharks Perform a Service for Earth's Waters

It is hard to get people to think of sharks as anything but a deadly enemy. They are thought to attack frequently. Although these fish perform a 41___ ( value) service for earth's waters and for human beings. business and sport fishing are 42___ (threat) their existence.As a result,some sharks are at risk of disappearing from Earth.

Warm weather may influence. both fish and shark 43___ (active). Many fish swim near coastal areas because of their warm waters. Experts say sharks may follow the fish into the same areas，where people also swim. In fact ,most sharks do not44___( purpose)charge at or bite humans. They are__ 45 ( think) to mistake a person for a sea animal,such as a sea (海豹) or sea lion, That is why people should not swim in the ocean when the sun.46___ (go) down or comes up. because those are the times when sharks are looking for food. Experts also say that bright colors and shiny jewelry(珠 寶) may cause sharks to attack.

Medical researchers want to learn 47___ (much) about the shark's body defense and immune(免疫的) systems against disease. 48__ ( research) know that sharks recover quickly from injuries. They study the shark in hope of finding a way to fight human disease.

Sharks are important for the world's oceans,as they eat 49___(injure). and diseased fish. Their 50__ ( hunt) activities mean that the numbers of other fish in ocean waters do not become too great.This protects the plants and other forms of life that exist in the oceans.

Critical Reading

Critical reading applies to non- fiction writing in which the author puts forth a position or seeks to make a statement. Critical reading is active reading. It involves more than just understanding what an author is saying. 26____Here are the things you should do to be a critical reader.

Consider the context of what is written. You may be reading something that was written by an author from目different cultural context than yours. Or.you may be reading something written some time ago in a different time context than yours, 27____

Question assertions made by the author. Don't accept what is written at face value.28____Look for facts. examples, and statistics that provide support, Also look to see i the author has integrated the work of authorities.

Compare what is written with other written work on the subject, Look to see that what is written in consistent with what others have

written about the subject.29____

Analyze assumptions made by the author. Assumptions are whatever the author must believe is true in order to make assertions. In many cases. the author's assumptions are not directly stated.30____

Once you identify an assumption, you must decide whether or not the assumption is valid.

A. This means you must read carefully in order to identify any assumptions.

B. Before accepting what is written, be certain that the author provides sufficient support for any assertions made,

C. Critical reading involves questioning and evaluating what the author is saying: and forming your own opinions about what the author i saying.

D. In either case, you must recognize and take into account any differences between your values and those represented by the author.

E.If there are, inconsistencies. carefully. evaluate the support the author provides for the inconsistencies.

F.In doing this. be certain that the sources ate credible.

Muren feels that with CG technology ,special effects can be used to make movies more expressive() 

• A、Right

• B、Wrong

• C、Not mentioned