PERTH--Search crews will send a submarine deep into the Indian Ocean on Monday for the first time to try to determine whether signals detected by sound-locating equipment are from the missing Malaysian plane's black boxes, the Australian head of the search said. Angus Houst on said the crew on board the Ocean Shield will send the underwater vehicle sometime Monday evening. The Bluefin 21 submarine can create a sonar map of the area to chartany wreckage on the seafloor. The move comes after crews picked up a series of underwater sounds over the past two weeks that were consistent with an aircraft's black boxes. "We haven't had a single detection in six days, and l guess it's time to go under water," said Houston. "Analysis of the four signals has reduced the search area on the ocean floor. The experts have therefore determined that the Australian Defense Vessel Ocean Shield will stop searching with the Towed Pinger Locator later today and use the underwater vehicle Bluefin 21 as soon as possible," he said at a news conference in Perth. _ He said the submarine will take 24 hours to do each task, including two hours to dive, 16 hours to search the bottom, then two more hours hack up and four hours to download data. Recovering the plane's flight data and cockpit voice recorders is necessary For investigators to try to figure out what happened to Flight 370, which disappeared on March 8. Houston said the search using the submarine will be a slaw and painstaking process. The submarine takes six times longer to cover the same area as the pinger locator,and will need about six weeks to two months to examine the present underwater zone. The signals are also coming from 4,500 meters (15,000 feet) below the surface, which is the deepest the submarine can dive. The submarine will be sent deep into the Indian Ocean on Monday to _ . A) create a sonar trap of the area B) pick up underwater sounds C) see if the signals detected are from the target black boxes D) reduce the search area on the ocean floor
C
The day before yesterday, when Peter's family were having dinner, Father raised an interesting question, "Was there anything in our past that we feel ashamed of, guilty about, or regretted? Maybe we can find ways to say sorry, or take some action to right any wrong doing." This seemed like a very private matter, but Peter thought about it carefully the whole night. Peter remembered an incident from middle school. In his school, there was a worker, Neil Stone, who none of the kids liked. One night, Peter and two of his classmates decided to play a trick on him. They found a can of red paint, and wrote on the school main road in bright red: Neil Stone is a fool! The next day, the whole school saw these words. Within two hours, Neil had Peter and his two classmates in his office. His classmates said that they had done it but Peter lied, denying the truth. No one ever talked about it. This morning, Peter went back to his middle school. Neil Stone is still working there. "Sorry, Neil. Do you still remember what happened ten years ago? I want you to know that I did it." "I knew it!' Neil laughed. They had a good laugh and a lively discussion. Neil's closing words were: "Peter, I always felt bad for you because your classmates got it off their mind, and I knew you were carrying it around all these years. I want to thank you for visiting me... for your sake." Peter knows that no matter how difficult the situation is, it is never too late to clear up the past and make a fresh start. What is the best title for this passage? A) Peter's story. B) An unforgettable lesson. C) It's never too late. D) Every dog has its day.
C
Q: On a BA flight from Johannesburg, a middle-aged South African lady found herself sitting next to a black man. She called the cabin crew attendant over to complain about her seating. "What seems to be the problem, Madam?" Asked the attendant. "Can't you see?" She said, "You've sat me next to a black. I can't possibly sit next to this dirty disgusting human. Find me another seat!" "Please calm down, Madam," the attendant replied, "The flight is very full today, but I'll tell you what I'll do--I'll go and check to see if we have any seats available in club or first class." A few minutes later, the attendant returned with the good news, which she delivered to the lady, who cannot help but look at the people around her with a smug and self-satisfied grin. "Madam, unfortunately, as I guessed, economy is full. I've spoken to the cabin services director, and club is also full. However, we do have one seat in first class." Before the lady had a chance to answer, the attendant continued. "It's most extraordinary to make this kind of upgrade, however, and I have had to get special permission from the captain. But, according to this _ , the captain felt that it was unbelievable that someone should be forced to sit next to such an obnoxious person." Having said that, the attendant turned to the black man sitting next to the lady, and said, "So if you'd like to get your things, sir, I have your seat ready for you." At that moment, the surrounding passengers stood and gave a long-lasting ovation while the black man walked up to the front of the plane... From the passage, we can make a conclusion that _ . A) people don't like those who look down on others B) the attendant aboard is unfriendly C) the white lady was refused to go on the plane at last D) many passengers aboard don't like to sit next to the black man.
A: A
Teacher's Day around the world is not celebrated on the same day. In some countries, Teacher's Day is celebrated on working days. However, in other countries, it is celebrated on holidays. Here we are giving you a list of countries that celebrate Teacher's Day on holidays. China Teacher's Day was proposed at National Central University in 1931. It was adopted by the central government of Republic of China in 1932. In 1939, the day was set on August 27, Confucius's birthday. The government of the People's Republic of China called it off in 1951. It was reestablished in 1985, and the day was changed to September 10. Now more and more people are trying to celebrate Teacher's Day back to Confucius's birthday. India In India, Teacher's Day is celebrated on September 5, in honor of Dr Sarvepalli Radhakrishnan, the second President of India,because his birthday was September 5. Russia In Russia, Teacher's Day is on October 5. Before 1994, this day was set on the first Sunday of September. The USA In the United States, Teacher's Day is a holiday on the Tuesday of the first full week of May. Thailand January 16 was adopted as Teacher's Day in Thailand by a resolution of the government on November 21, 1956. The first Teacher's Day was celebrated in 1957. Iran In Iran, Teacher's Day is celebrated on May 2 every year. It is in honor of the famous Iranian professor Ayatollah Morteza Motahhari who died on May 2, 1980. Although different countries celebrate Teacher's Day on different days, the activities people take to celebrate it just stay the same. In which year was Teacher's Day changed from August 27 to September 10 in China? A) 1931. B) 1939. C) 1951. D) 1985.
D