态度。A. 谨慎的; B. 支持的; C. 模棱两可的; D. 反对的。故选B。

4. What is the best title for the text?

A. Flying Car at Auto Show

B. The Transition's First Flight

C. Pilots'Dream Coming True

D. Flying Car Closer to Reality

【解析】选D。主旨大意题。飞车试飞成功, 已经有大约100人预订了飞车, 飞车即将成为现实。故选D。

The 93 petaflop Sunway Taihu Light is installed at the National Supercomputing Centre in Wuxi. At its peak, the computer can perform around 93, 000 trillion calculations per second. It is twice as fast and three times as efficient as the previous leader Tianhe-2, also from China, said Top500 which released the new list on Monday.

　　Its main applications include advanced manufacturing, weather forecasting and big data analysing, wrote Jack Dongarra in a paper about thenew machine. It has more than 10. 5 million locally-made processing cores and 40, 916 nodes and runs on a Linux-based operating system.

　　For the first time since the list began, China has overtaken the US with 167 computers in the Top500 while the US has 165. "Considering that just 10 years ago, China claimed a mere 28 systems on the list, with none ranked in the top 30, the nation has come further and faster than any other country in the history of supercomputing, "said Top500. The US has four supercomputers in the top 10 of the Top500 list, while China has two which currently occupy the top two places. The other positions in the top 10, published twice a year, are occupied by machines from Japan, Switzerland, Germany and Saudi Arabia.

　　"As a computer scientist it's difficult to write software that can take advantage of and control large numbers of computer cores, "said Professor Les Carr from the University of Southampton.

　　"This is why supercomputers are restricted to specialised applications-you need very specialised computing needs to take advantage of them. "

　　"They are like extremely high-spec Grand Prix racing cars-they are fantastic for racing on circuits but they're not great for travelling from London to Edinburgh. "

【语篇概述】中国的"神威•太湖之光"超级计算机成为新的世界冠军。这是正在德国法兰克福举行的"2016世界超算大会", 国际Top500组织刚刚发布的。

5. What can we know about the computer Tianhe-2 in the first paragraph?

A. It can perform around 46, 500 trillion calculations per second.

B. It is twice as fast as the computer Sunway Taihu Light.

C. It is also installed at the National Supercomputing Centre in Wuxi.

D. It is the fastest computer in the previous list of the Top500 computers.

【解析】选A。推理判断题。根据第一段可知中国研制的最新的"神威•太湖之光"计算机在运算速度上是先前的"天河二号"计算机的两倍, 故"天河二号"计算机的运算速度大约是46, 500千兆每秒。其他三项说法都有误。

6. The super computer Sunway Taihu Light is mainly used for the following EXCEPT_______.

A. manufacturing　　　　　B. weather forecasting

C. daily teaching D. big data analysing

【解析】选C。细节理解题。根据第二段第一句可知超级计算机"神威•太湖之光"主要