高三英语阅读理解限时训练〔39〕
A
A Plan For Exploring Mars
NASA is moving ahead with plans to put a long-armed Lander on Mars’ icy North Pole to arch for clues for water and possible signs of life．
The $386 million Phoenix Mars is planned to touch down in the Martian arctic in 2021．The stationary probe will u its robotic arm to dig into the icy land and pick up soil samples to analyze．In 2021, the Mars Odysy orbiter spotted evidence of ice-rich soil near the arctic surface．
Scientists hope the Phoenix mission will find clues to the geologic history of water on the Red Planet and determine whether microbes existed in the ice．
Phoenix will be the first mission of the Mars Scout program, a renewed, low-cost effort to st
udy the Red Planet．“The Phoenix mission explores new territory in the northern plains of Mars analogous to the permafrost regions on Earth,〞 Peter Smith said．
True to its name, Phoenix ro from the ashes of previous missions．The lander for Phoenix was built to fly as part of the 2021 Mars Surveyor program．But the program broke down after the well-known disappearance of the Mars Polar Lander in 1999．The Polar Lander lost contact during a landing attempt near the planet’s south pole after its rocket engine shut off prematurely, causing the spacecraft to fall about 130 feet to almost certain destruction．
The Phoenix probe had been in storage at a Lockheed Martin clean room in Denver before it was reud for its prent mission．It will carry science instruments that were designed for the Mars Surveyor program including an improved panoramic camera and a trench-digging robotic arm．Phoenix will lift off from the Kennedy Space Center in August 2021 and land on the planet nine months later．
filewatcher41．The passage mainly tells readers that _________．
A．clues of water will be found in Phoenix
B．Phoenix will be nt to find clues of water on Mars
C．August 2021 will e Phoenix lift off
D．the Mars Scout program will be carried out
42．According to the passage, we know Phoenix will land on Mars _________．
A．in May 2021 B．in August 2021
C．in August 2021 D．in September 2021
43．After Phoenix lands on Mars, we can infer it will firstly _________．
A．find soil samples and nd them to the earth
B．look for the icy land to dig for the soil samples
C．take photos and nd them to the earth
D．find the remains of the Mars Polar Lander
B迎新晚会开场白
Some weight-loss camps, which are rare in China just a few years ago, have sprouted in Beijing, Qingdao, Shenzhen, communistpartyand other cities．Today about 15 percent of adults, or 200 million Chine, llgare reportedly overweight．Of the,90 million—about 7 percent—are obe〔极肥胖的〕．
Experts say the obesity epidemic is spreading to children, though more slowly than in adults．The trend, they say, will have a huge impact on the health of China’s citizens and economy．“We’re eing a very large proportion of children and adolescents who are quite heavy and aren’t moving much,〞 said Barry Popkin, a nutrition professor．Popkin carries out an ongoing health-and-nutrition survey of 16,000 houholds in China．He says more kids today are overeating and putting on weight “quite quickly〞．In just ten years China’s childhood obesity rate has doubled, with the greatest gains coming in urban areas．“In big cities it’s a big problem．〞
Some experts blame the extra fat on a range of factors, many of them tied to China’s rapidly changing economy and culture．The diets of Chine adults and children are far higher in calorie-laden meat, fish, eggs, dairy products,中文名字翻译英文 fat, 什么叫abcand sugars than ever before．In addition, n是什么意思kids—especially city dwellers—are more dentary today and spend more time indoors in front of homework,standup television, computer games,我妈嫌我 and the Internet．
lfsufficientShuwen Ng, a health economist, says that kids in China now have pocket money, and they spend a portion of it on junk food．Ng adds that advertising and peer groups influence kids’ food choices．Certain foods, such as new candies or fast food, have attractive features．
China’s childhood obesity rate still lags that of the United States, where some 15 percent of kids are said to be obe．But the long-term effects are equally rious．
44．According to the passage we know ．
A．weight-loss camps have been very popular in China six years ago
B．about 290 million Chine are overweight in China in all
C．in China childhood obesity rate in rural areas is lower than that in major cities
D．America’s childhood obesity rate is lower than China’s
45．The underlined word “dentary〞 in the third paragraph probably means．．
