Question

PERTH—Search crews will send a submarine(潛航器)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(聲吶)map of the area to chartany wreckage(殘骸)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(拖曳聲波定位儀)later today and use the underwater vehicle Bluefin 21 as soon as possible," he said at a news conference in Perth.

But Houston warned the switch to the submarine will not automatically "result in the detection of the aircraft wreckage. It may not.”

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(飛行員座艙)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.

1.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

2.According to the passage, the submarine_______ .

A. will download data of the black boxes

B. can find the aircraft wreckage within 24 hours

C. will recover the plane's flight data and voice recorder

D. can dive to a depth of no more than 4,500 meters

3.The underlined sentences in the passage indicate that______.

A. the switch of the submarine may not function properly

B. the Ocean Shield will switch to submarine when it is necessary

C. the submarine will detect the wreckage of the plane automatically

D. the detection of the wreckage can't be guaranteed by using the submarine

4.The search will be a slow and painstaking process, mainly because _____ .

A. the underwater sounds were consistent with an aircraft's black boxes

B. the submarine travels slowly and the ocean is deep

C. they haven't had a single detection in six days

D. Ocean Shield stops searching wine the towed pinger locator

 

Answer 1

1.C

2.D

3.D

4.B

【解析】

試題分析:MH370失蹤以來，人們在地面上未能找到任何痕跡。人們決定首次將潛航器送至深海檢測那些被信號是否來自失事飛機的黑匣子。然而，由于潛航器的航行速度和大海的深度，這個過程將十分緩慢。

1.PERTH—Search crews will send a submarine(潛航器)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可知，其目的是檢測信號是否來自黑匣子。

2.The signals are also coming from 4,500 meters (15,000 feet) below the surface, which is the deepest the submarine can dive.可知，信號來自海底4500米深的地方，那也是潛航器能到達的最深的地方。故選D。

3.Houston認為潛航器的使用并不一定意味著能找到飛機殘骸，也可能那不是失事飛機的殘骸。故選D。

4. The submarine takes six times longer to cover the same area as the ginger locator,and will need about six weeks to two months to examine the present underwater zone. 可知，潛航器比定位器要多花六倍的時間覆蓋檢查相同的地方，并且需要六周到兩個月的時間檢測水下區(qū)域。說明潛航器航行地非常慢，而最后一段說明信號來自水下4500米深的地方，所以要花很久的時間。故選B。

考點：考查科技類短文閱讀。