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胃大部分切除的患者出现严重贫血，表现为外周血巨幼红细胞增多，其主要原因是下列哪项减少？
Pretty Good
When Spanish football club Barcelona paid US$35 million for Ronaldinho last summer, they weren't buying a pretty face. "I am(51)," admits the Brazilian superstar. "But everyone has got a different kind of beauty. What I(52)have is charm."
Indeed he has. His buck teeth, flowing hair, big smile, and of course his(53)skills are always eye-catching on the pitch. The 23-year-old striker scored two goals in a 3-2 win over Deportivo La Coruna on March 1. It was BarCelona's sixth win in a row and, thanks to their Brazilian's 10-goal contribution,(54)looked like a poor season could now end a success.
Ronaldinho - full name Ronatdo De Assis Moreira - is one of many South Americans who learned their skills playing in the backstreets before(55)them off on the world stage.
Great things were(56)when Gremio signed him as a seven-year-old, and he soon became friends with Ronaldo, who was then the other young star of Brazilian football. It was Ronaldo who first called him Ronaldinho, which(57)Little Ronaldo, and the name stuck.
He first(58)for his country in 1999 but it was at the 2002 World Cup where he showed his real worth, scoring an unbelievable free-kick in Brazil's quarter-final victory(59)England.
"I have never failed to deliver in big matches," Ronaldinho says. "My game is based on(60). Often a forward does not have the time to decide whether to shoot or pass. It is instinct that gives out the orders."
While he may not have David Beckham's good looks, Ronaldinho has a(61)reputation off the pitch. At former club Paris Saint Germain, which sold him to Barcelona, he broke(62)rules by going out and enjoying the city's nightlife.
"Without doubt, Ronaldinho is the most(63)player I have ever come across," says former PSG coach Luis Ferdandez. "The main(64)for any coach is that one player without discipline can hurt the whole team."
But Ronaldinho doesn't think he has done anything wrong. "I am just a young person who enjoys(65)," he says.
How many pounds of heroin were estimated to be smuggled into the United States in 19947
Late-night Drinking
Coffee lovers beware. Having a quick "pick-me-up" cup of coffee late in the day will play havoc with your sleep. As well as being a stimulant, caffeine interrupts the flow of melatonin, the brain hormone that sends people into a sleep.
Melatonin levels normally start to rise about two hours before bedtime. Levels then peak between 2 am and 4 am, before falling again." It's the neurohormone that controls our sleep and tells our body when to sleep and when to wake," says Maurice Ohayon of the Stanford Sleep Epidemiology Research Center at Stanford University in California. But researchers in Israel have found that caffeinated coffee halves the body's levels of this sleep hormone.
Lotan Shilo and a team at the Sapir Medical Center in Tel Aviv University found that six volunteers slept less well after a cup of caffeinated coffee than after drinking the same amount of decal. On average, subjects slept 336 minutes per night after drinking caffeinated coffee, compared with 415 minutes after decaf. They also took half an hour to drop off - twice as long as usual - and jigged around in bed twice as much.
In the second phase of the experiment, the researchers woke the volunteers every three hours and asked them to give a urine sample. Shilo measured concentrations of a breakdown product of melatonin. The results suggest that melatonin concentrations in caffeine drinkers were half those in decaf drinkers. In a paper accepted for publication in Sleep Medicine, the researchers suggest that caffeine blocks production of the enzyme that drives melatonin production.
Because it can take many hours to eliminate caffeine from the body, Ohayon recommends that coffee lovers switch to decal after lunch.
The author mentions "pick-me-up" to indicate that
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