The bird ________(展开) its wings and flew to the south.
After his ________ (一百) experiment, he got a great success.
Mr Lee devoted all his free time he had to________ (改善) the environment around him.
Mary lives on the eleventh floor, two floors _________ (在…的下面) Wilson.
—How long has he been ________ (离开) from Sydney?
—Since he finished his middle school.
Big ocean（海洋） fish have almost been endangered since the start of business fishing in the 1950s. 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（研究人员）collected records from fishing businesses and governments around the world. The magazine Nature published(发表) the findings.
The scientists say the common way called long-line 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(钩) 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. The study says long-line 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. 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）.
What is 1. to ocean fish?
Items（项目） | Situations | Results |
Business fishing of ocean fish | The number of large fish has been 2. to 10% in the past fifty years. | The number of fish is becoming smaller and smaller. |
The size of ocean fish | Big ocean fish have almost been endangered since the start of business fishing in the 1950s. | The size of ocean fish is not as 3. as that in the past. |
The way of fishing | Long-line fishing is especially used to 4. big fish. | Fish groups can be destroyed a lot faster than in the past 5. of business fishing. |
