题目内容
The air-conditioners make the rooms comfortable ________.
- A.to live in
- B.to live
- C.living
- D.living in
宾语及宾补存在着逻辑上的主语及表语的关系（不定式作宾补除外），即主系表结构，此题后半部分可理解为the room is comfortable to live in。
An experimental solar-powered plane landed safely Thursday after completing its first 24-hour test flight, proving that the aircraft can collect enough energy from the sun during the day to stay aloft(在空中) all night.
Pilot Andre Borschberg eased the Solar Impulse onto the runway at Payerne airfield about 30 miles southwest of the Swiss capital Bern at exactly 9 a.m. (3 a.m. EDT) Thursday. Helpers rushed to stabilize the pioneering plane as it touched down, ensuring that its massive 207-foot wingspan didn't scrape the ground and topple(倾倒) the craft.
The record feat(壮举) completes seven years of planning and brings the Swiss-led project one step closer to its goal of circling the globe using only energy from the sun. ‘We achieved more than we wanted. Everybody is extremely happy,’ Borschberg told reporters after landing.
Previous flights included a brief ‘flea hop’ and a longer airborne test earlier this year, but this week's attempt was described as a ‘milestone’ by the team. The team said it had now demonstrated that the single-seat plane can theoretically stay in the air indefinitely, recharging its depleted batteries using 12,000 solar cells and nothing but the rays of the sun during the day. But while the team said this proves that emissions-free air travel is possible, it doesn't see solar technology replacing conventional jet propulsion(喷气推进) any time soon. Instead, the project's overarching purpose is to test and promote new energy-efficient technologies.
Project co-founder Bertrand Piccard, himself a record-breaking balloonist, said many people had been skeptical that renewable energy could ever be used to take a man into the air and keep him there. ‘It’s a matter of time that people come to believe and understand about renewable energies,’Piccard said, adding that the flight was proof that new technologies can help break society's dependence on fossil fuels.
The team will now set its sights on an Atlantic crossing, before attempting a round-the-world flight in 2013, making only five stops along the way. ‘It's absolutely not time to relax,’ said Piccard.
Title: A __________ in solar-powered flight and its background information
| A project on solar-powered flight | Main purpose: To test and promote __________ __________: To make an Atlantic crossing; To attempt a round-the-world flight with only five stops in 2013. Long-term goal: To circle the globe using only __________. |
| __________ | a brief ‘flea hop’; an airborne test. |
| Record-setting test flight | Name of the plane: __________ Name of the pilot: Andre Borschberg Time: __________ Length of Place: at Payerne airfield, Switzerland. Achievements: ●proving that the aircraft can collect enough energy from the sun during the day to stay aloft all night, making __________ possible; ●proving that new technologies can help rid society of __________ fossil fuels; ●bringing the project __________ to its long-term goal. |
O makes trouble . It keeps the oxygen from passing into your tissues as fast as it should . Because of this , cigarette country is always about 8000 feet above sea level . Someone who smokes and lives at sea level gets as little oxygen as a nonsmoker at an altitude（高度）of nearly two miles .This happens to everyone who smokes , no matter how old or how young . Anyone who competes in sports can tell you that those who smoke run out of breath more quickly than those who do not .Death Valley is a land of beautiful yet dangerous extremes. Death Valley can be dangerously cold during the winter months. Storms in the mountains can produce sudden flooding on the floor of the Valley.
The air temperature during the summer has been as high as fifty- seven degrees Celsius. The sun can heat the ground so that the temperature of the rocks and soil can be as high as seventy -four degrees Celsius.
Death Valley contains evidence of several ancient volcanoes that caused huge explosions. Evidence of one of these explosions is called Ubehebe Crater. The explosion left a huge hole in the ground almost a kilometer and a half wide. In many areas of Death Valley it is easy to see where the ground has been pushed up violently by movement deep in the Earth. This movement has created unusual and beautiful rock formations. Some are red. Others are dark brown, gray, yellow or black.
The area was named by a woman in 1849. Thousands of people from other parts of the ountry traveled Lo the gold mining areas in California. They were in a hurry to get there before other people did. One group trying to reach California decided to take a path called the Old Spanish Trail. By December they had reached Death Valley. They did not have to survive the terrible heat of summer, hut there was still an extreme lack of water. There were few plants for their work animals to eat.
The people could not find a pass through the call mountains to the west of the Valley. Slowly, they began co suffer from a lack of food. To survive, they killed their work animals for food and began to walk out of the Valley. As they left, one woman looked back and said, “Good -bye, death valley.” The name has never been changed.
Almost everyone who visits Death Valley visits a huge house called Scotty' s Castle. The building design is Spanish, with high thick walls to provide protection from the fierce heat.
The castle is named for Walter Scott , called Scotty by his friends. He was a gold miner. He told everyone that he built the house with money he made from his gold mine. Many people believed him. But it was not really the truth.
【小题1】The first two paragraphs discuss Death Valley' s ．
| A．geography | B．climate | C．location | D．size |
| A．a valley that is formed by explosions |
| B．a place where volcanoes are still active |
| C．a good example of the violence of nature |
| D．a symbol of rock formations in history |
| A．explore the mystery of the valley | B．find an area with plants for animals |
| C．experience the terrible heat of summer | D．look for gold in California |
| A．the truth about Scotty's Castle | B．why Spanish built the castle |
| C．when the castle was built | D．where the castle lies in |
| A．the interesting place in Death Valley | B．the facts about Death Valley |
| C．the origin of Death Valley | D．the route to visit Death Valley |