听力原文: (33)Researchers report that doing two or more things at once may decrease efficiency and actually take extra time switching from one task to another. In the most severe cases, it can even mean the difference between life and death.
In the study, four groups of young adults carried out a series of tasks and switched between different tasks, some complicated, such as solving math problems, and some more familiar, such as identifying geometric shapes. (34)The researchers found that time was lost in just switching from one task to another, and that time costs increased with the complexity of the tasks. “For each aspect of human performance—perceiving, thinking and acting people have specific mental resources whose effective use requires supervision through executive mental control,” said the lead author, David Meyer in materials provided with the report.
So-called“ multitasking” is becoming increasingly common because of cell phones and computers. the researchers point out, but it may just be adding wasted time and inefficiency to our days. A mere half second of time lost to task switching can mean the difference between life and death for a driver using a cell phone, Meyer said. (35)The authors say the research should make employers and employees think twice before implementing multitasking.
(30)
A. Multitasking is inefficient and wastes time.
B. Multitasking is a matter of life and death.
C. Multitasking is the process of executive control.
D. Multitasking is becoming increasingly common.
The job that makes it hard for the candidates to keep privacy is ______.
A. Wind Energy Sales Director
B. Sustainability Director
C. Response Management Specialist
D. Government Contract Manager
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文: Deforestation in the Brazilian Amazon dropped nearly 46%from August 2008 to July 2009—the biggest annual decline in two decades, the government said Thursday. (30)Analysis of satellite imagery by the National Institute for Some Research shows an estimated 7008 square kilometers of forest were cleared during the 12-month period, the lowest rate since the government started monitoring deforestation in 1988.
The numbers have been falling since 2004. when they reached a peak of 27000 square kilometers cleared in one year, according to the space research institute. The government credited its aggressive monitoring and enforcement measures for the drop, as well as its promotion of sustainable activities in the Amazon region, an area in northern Brazil the size of the US west of the Mississippi River. (31)But Paulo Gustavo, environmental policy director of Conservation International, said a main factor is the drop in world prices for beef, soy and other products that drive people to clear land for agriculture in the rainforest.
(32)Satellite images from the space research institute have allowed government inspectors to increase enforcement, the government said. The Brazilian Environment Institute reported confiscating about 230 000 cubic meters of wood,414 trucks and tractors and 502000 hectares of land linked to illegal deforestation activities from August 2008 to July 2009. Amazon deforestation causes 75% of Brazil's greenhouse gas emissions, according to the National Inventory of Greenhouse Gases.
(27)
A. It has been decreasing largely since 1988.
B. It has been out of control for two decades.
C. It has been improved in 2004.
D. It has basically met with government monitoring.
A.The director probably isn't able to make an exception.B.The director probably won't
A. The director probably isn't able to make an exception.
B. The director probably won't see her.
C. The director usually isn't very helpful.
D. The director usually isn't responsible for part-time students.