聽寫填空,只寫填空內(nèi)容,不抄全文,5-10句,不用寫標(biāo)號(hào),注意標(biāo)點(diǎn),口語中因結(jié)巴等問題造成的重復(fù)單詞只寫一遍~

Medical researchers are refining their knowledge about what keeps astronauts in space phsically fit.

Benjamin Levine: [---1---] But that also is hard work. [---2---]

That's Benjamin Levine, a medical researcher working with the National Space Biomedical Research Institute.

Benjamin Levine: [---3---] And that was a pretty quick answer: it's rowers.

[---4,5---]

Benjamin Levine: [---6,7---]

Our thanks to the National Space Biomedical Research Institute – innovations for health in space and on Earth

I'm Jorge Salazar for ES, a clear voice for science. We're at

【視聽版科學(xué)小組榮譽(yù)出品】
We calculated or estimated that, in order to maintain the work of the heart while you're in spaceflight, you'd need to do about 90 minutes of cycling every day to keep the heart at its pre-spaceflight level. It's a lot of exercise. We looked to the sporting world and asked, which athletes have the biggest hearts, the densest bones, the biggest muscles. Levine's recent study combined rowing with nutritional support for test subjects spending five weeks on bed rest to simulate the effects of reduced gravity on the body. And it appears the rowing regimen does keep the hearts, bones and muscles of astronauts fit, while cutting the time spent on exercise by more than half. I think that all astronauts would benefit from rowing that doesn't mean that all astronauts will like rowing. Honestly, I think that as long as you maintain the work of the muscle, it will maintain its structure and function.