E
The Petronas Twin Towers in Kuala Lumpur in Malaysia were completed in 1998. Each tower is 452 meters high and has 88 floors. Designed to serve all floors, the four executive lifts(公务电梯) in each tower transport passengers from the underground car park to the top floor in 90 seconds. The towers are joined 170 meters up by a two-level bridge on the 41st and 42nd floors.
The Sears Tower in Chicago in the United States was the tallest building in the world for more than 20 years. Completed in 1973, the tower is 442 meters high. It has 110 floors and 14,771 square meters of space. Its non -stop lift goes up to the top floor at a speed of 487 meters per minute.
At 421 meters high. Jin Mao Tower in Shanghai is the tallest building in China. Completed in 1999, it has 88 floors and has the world’s highest hotel rooms. This building was made to be strong-it can stand typhoon (台风) winds of up to 200 kilometers per hour.
Burj Dubai
A. A flat floor
B. A non-stop lift
C. A long passage
D. A two-level bridge
E
The Petronas Twin Towers in Kuala Lumpur in Malaysia were completed in 1998. Each tower is 452 meters high and has 88 floors. Designed to serve all floors, the four executive lifts(公务电梯) in each tower transport passengers from the underground car park to the top floor in 90 seconds. The towers are joined 170 meters up by a two-level bridge on the 41st and 42nd floors.
The Sears Tower in Chicago in the United States was the tallest building in the world for more than 20 years. Completed in 1973, the tower is 442 meters high. It has 110 floors and 14,771 square meters of space. Its non -stop lift goes up to the top floor at a speed of 487 meters per minute.
At 421 meters high. Jin Mao Tower in Shanghai is the tallest building in China. Completed in 1999, it has 88 floors and has the world’s highest hotel rooms. This building was made to be strong-it can stand typhoon (台风) winds of up to 200 kilometers per hour.
Burj Dubai
A. 30 seconds
B. about 1 minute
C. nearly 2 minutes
D. a minute and a half
As NASA prepares to set twin robots loose on the Martian surface and makes plans to send another in 2007, the agency’s long term goal is clear: determine whether the red planet does or ever did harbor life.
But the current search for life is necessarily limited to life as we know it, organisms dependent on liquid water. A SPACE. corn reader recently suggested that "We as humans are arrogant, simply believing that any other form of life will be just like us. "
Researchers devoted to the search for extraterrestrial (ET) have a similar view. "Scientists’ approach to finding life is very Earth-centric," says Kenneth Nealson, a geobiologist at the University of Southern California. "Based on what we know about life on Earth, we set the limits for where we might look on other planets," Nealson said. Within that framework, however, there are extreme cases of life on Earth that suggest the range of places to look on frigid Mars.A. there might be life on Mars that still remains dormant
B. there might be ET in the universe that is like human beings
C. there might be life that is beyond the range of our current search
D. there might be ET elsewhere in the universe that does not require water
我来回答: