I'm taking a test and have to guess the right answer to the question after the article. Article: Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a day in the not-too-distant future when all autos will be abandoned and allowed to rust. Other authorities, however, think the auto is here to stay. They hold that the car will remain a leading means of urban travel in the foreseeable future. The motorcar will undoubtedly change significantly over the next 30 years. It should become smaller, safer, and more economical, and should not be powered by the gasoline engine. The car of the future should be far more pollution-free than present types. Regardless of its power source, the auto in the future will still be the main problem in urban traffic congestion ( ). One proposed solution to this problem is the automated highway system. When the auto enters the highway system, a retractable ( ) arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically. Once attached to the rail, the car will become electrically powered from the system, and control of the vehicle will pass to a central computer. The computer will then monitor all of the car 's movements. The driver will use a telephone to dial instructions about his destination into the system. The computer will calculate the best route, and reserve space for the car all the way to the correct exit from the highway. The driver will then be free to relax and wait for the buzzer ( ) that will warn him of his coming exit. It is estimated that an automated highway will be able to handle 10,000 vehicles per hour, compared with the 1,500 to 2,000 vehicles that can be carried by a present-day highway. Question: In an automated highway system, all the driver needs to do is _ . Options: A: keep in the right lane B: wait to arrive at his destination C: keep in constant touch with the computer center D: inform the system of his destination by phone
D

I'm taking a test and have to guess the right answer to the question after the article. Article: Until late April, northern China had experienced eight severe sandstorms this year alone, worsening the air quality in half the region's cities. This year's sandstorms are considered more severe than before. Not only are they increasing in frequency and having more serious effects on air quality, but they are also occurring earlier in the season and affecting a wider area. The timing of the first sandstorm moved up by a week this year, and the sandstorm-affected area has extended beyond 3 million square kilometers. The reason for the frequent dust storms is worsening desertification in China's northern areas, caused by a combination of warm, dry weather and the rapid spread of agriculture. The dust-affected area is likely to expand to the northeast in the near future as a large area of grassland in Inner Mongolia's northern plain turns rapidly to desert. Due to its lack of rainfall and overall surface dryness in the spring, Beijing experiences sandstorms every March and April. The most recent sandstorm hit the capital on April 17 and was the worst in five years. For about 40 days every year, the pollutants cannot be diffused, as the city's location makes it a natural container for accumulating sand and dust. Rapid urban development is affecting Beijing's air quality as well. To _ the dust from hundreds of new construction sites, authorities have issued rules asking builders to cover all working areas, pack down loose dirt, and wash vehicle tires when leaving the sites. Question: Beijing will experience sandstorms every March and April mainly because of _ . Options: A: the dry weather B: its location C: worse air D: rapid urban development.
A

I'm taking a test and have to guess the right answer to the question after the article. Article: Chokwe Selassie, aged 13, is working hard to help drivers avoid potholes . The eighth-grader was inspired to kick off his creation on a recent morning, when his mother was driving him to school. Their car was damaged as it went over a huge pothole in the middle of the street in their hometown of Jackson, Mississippi. He decided to do something about the pothole problem in his city. Chokwe developed the app with his friends Rodriguez Ratliff and Emmanuel Brooks. When the app detects a pothole, it is highlighted in red. And if you get close to the pothole, your phone will warn you with a beep. Drivers can also use the app to report any potholes and look for other routes they can take to avoid roads that have them. The app relies on current available information about the streets of Jackson, already stored in a database of the city's 311 call system. Through the call system, citizens dial 3-1-1 to report non-emergency problems which include potholes. Chokwe and his friends determined that focusing on the 10 busiest streets in Jackson would give them a large enough sample size to test the prototype. While developing the app, the boys took part in a Minority Male Makers Program sponsored by Verizon and held at Jackson State University. They learned 3D printing and design, and how to create apps. Through the program Chokwe and his friends received encouragement and guidance. Although the app isn't yet available for sale, Chokwe is already looking for ways to improve the app. He hopes to add more to it until it spreads all over the country. Question: Which can be Chokwe's future target? Options: A: Encouraging more kids to create apps. B: Taking part in more learning programs. C: Making the app available for sale online. D: Making the app include streets nationwide.
D