Scientists in Canada say big fish have almost disappeared from the world since the start of industrial（产业的） fishing in the 1950s. The scientists found the numbers of some kinds of large fish have dropped by ninety percent in the past fifty years.
The study took ten years. The researchers gathered records from fishing businesses and governments around the world. The magazine Nature published the findings.
The scientists say the common method called long line fishing ravages the populations of large fish. This method involves many fishing lines connected to one boat. These wires can be nearly one hundred kilometers long. They hold thousands of sharp metal hooks to catch fish.
Long line fishing is especially common in the Japanese fishing industry. Records showed that Japanese boats used to catch about ten fish for every one hundred hooks. But long line fishing boats now might only catch one fish per hundred hooks.
The scientists say industrial fishing can destroy groups of fish much faster than in the past. The study suggests that whole populations can disappear almost completely from new fishing areas within ten to fifteen years.
Ransom Myers and Boris Worm of Dalhousie University in Nova Scotia led the study with the University of Kiel in Germany. Worm says the destruction could lead to a complete reorganization of ocean life systems. Meyers says the decreased numbers of large fish are not the only worry. He says even populations that are able to reproduce do not get the chance to live long enough to grow as big as their ancestors. He says not only are there fewer big fish, but also they are smaller than those of the past.
It’s the end of this program ,Thank you for your listening.
1.What’s the best title for the passage?
A. Big fish are disappearing B. Long—line fishing in Japan
C. The harm of industrial fishing D. Stop killing big fish
2.Which of the following DOESN’T show that the populations of big fish are smaller than before?
A. Fish can disappear almost completely from new fishing areas.
B. Now long—line fishing boats might catch one fish per hundred hooks.
C. Fish now don’t have the chance to grow big enough.
D. Scientists spent ten years studying the populations of large fish.
3.What can we learn from the passage?
A. The number of big fish started to drop greatly about fifty years ago.
B. The study was started by Boris Worm of Dalhousie alone.
C. There will be no big fish left in fifty years .
D. Japaneses people have stopped catching big fish.
Long time ago, there was a seed. Because he was only a seed, 36 cared to notice him. Thus, feeling useless, the seed thought he was not important at all.
Then one day, a 37 picked him up and threw him on an open field under the sun. He was 38 , thinking, "Why would a wind do such a thing?" But 39 any pleasant answers, he was 40 with sunlight as well as 41 , sometimes light and sometimes heavy.
Time flew by and years later, he saw a 42 sitting by his side. "Thank God for this. I really need some 43 ",he heard the traveler say.
"What are you 44 ?"The seed asked. He thought the man was 45 him. Surely he had seen many people sitting by his side, 46 no one ever spoke to him like that.
"Who is this?" The man was 47
"This is me, the seed. "
"The seed?" The man looked at the big 48 "Are you kidding me? You are not a seed. You are a tree. A big tree ！
" 49 ?"
"Yes! Why else do you think people 50 here?"
"What do they come here for?"
"To 51 your shade! Don't tell me you didn't know you had 52 over time. "
A moment passed, and the traveler's words made him think a lot.
The seed, now a big tree, thought and 53 for the first time in his life. The years of suffering from the sun and the rain were useful to him at last.
"Oh! That means I'm not a(n) 54 seed anymore! Wow! I'm a big tree now. That's the 55 that I really want !"
1.A. everybody B. nobody C. someone D. anything
2.A. wind B. bird C. boy D. man
3.A. confused B. glad C. excited D. hurt
4.A. except for B. because of C. instead of D. in case of
5.A. made B. covered C. heated D. provided
6.A. food B. rain C. friends D. flowers
7.A. traveler B. woman C. dog D. god
8.A. water B. 1ove C. rest D. money
9.A. thinking of B. preparing for C. looking for D. talking about
10.A. looking at B. making fun of C. seeing off D. getting away from
11.A. so B. because C. but D. since
12.A. angered B. delighted C. moved D. surprised
13.A. stone B. mountain C. tree D. river
14.A. When B. Really C. Where D. Who
15.A. hate B. leave C. live D. come
16.A. hunt B. like C. enjoy D. steal
17.A. appeared B. survived C. grown D. risen
18.A. cried B. smiled C. sang D. danced
19.A. small B. beautiful C. ugly D. lovely
20.A. experience B. adventure C. reason D. life
People a monument to honour those people who devoted their lives to their country.
A. set out B. set down C. set up D. set on
Look! Every player in our team is doing their best. It seems our team is going to win.
A. even if B. if only C. as if D. only if
I am sorry that I can not meet you at the airport. I Changsha by the time you come back from abroad.
A. am leaving B. will leave C. will have left D. have left
After the explosion ,the roads are full of people leaving the city
A. afraid B. frightened C. frightening D. scary
