Big ocean(海洋)fish have almost disappeared from the world since the start of business fishing in the 1950’s．The scientists found that the number of large fish has dropped by 90 percent in the past fifty years．The study took ten years．The researchers collected records from fishing business and governments around the world．The magazine Nature published the findings．
The scientists say the common way called longline fishing is especially harmful to large fish．This way includes many fishing lines that are connected to one boat．If these lines are joined together，they can reach one hundred kilometers．They hold thousands of sharp metal hooks to catch fish．Longline fishing is especially common in the Japanese fishing industry．Records show that Japanese boats used to catch about ten fish for every hundred hooks．The study says longline fishing boats now might catch one fish per hundred hooks．
The scientists say business fishing can destroy groups of fish much faster than in the past．The study suggests that large fish can disappear almost completely from new fishing areas within ten to fifteen years．Ocean life system could be destroyed．
It’s not the only worry that the number of large fish is becoming smaller and smaller．What’s worse．they are smaller in size than their ancestors(祖先)．

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。    

Faces, like fingerprints, are unique. Did you ever wonder how it is possible for us to recognize people?           Yet a very young child – or even an animal, such as a pigeon, can learn to recognize faces. We all take this for granted.

____ When we talk about someone’s personality, we mean the ways in which he or she acts, speaks, thinks and feels that make that individual different from others.

Like the human face, human personality is very complex. But describing someone’s personality in words is somewhat easier than describing his face. ____ ____ But if you were asked to describe a “nice person”, you might begin to think about someone who was kind, considerate, friendly, warm, and so forth.

There are many words to describe how a person thinks, feels and acts. Gordon Airport, an American psychologist, found nearly 18,000 English words characterizing differences in people’s behavior. ____ Bookworms, conservatives, military types – people are described with such terms.

People have always tried to “type” each other. Actors in early Greek drama wore masks to show the audience whether they played the villain’s or the hero’s role. In fact, the words “person” and “personality” come from the Latin persona, meaning “mask”. Today, most television and movie actors do not wear masks. ____

A  If you were asked to describe what a “nice face” look like, you probably would have a difficult time doing so.

B  But we can easily tell the “good guys” from the “bad guys” because the two types differ in appearance as well as in actions.

C  We also tell people apart by how they behave.

D  People have difficulty in describing the features of fingerprints.

E  And many of us use this information as a basis for describing, or typing one`s personality.

F  Experts say that actors differ in their behavioral and physical characteristics in acting.

G  Even a skilled writer probably could not describe all the features that make one face different from another.