灝藍(lán)供稿

Working in Space

灝藍(lán)供稿

How do they sleep? They spend the night foating in a sleeping bag inside a small cubicle[小隔間]on the ceiling. American astronaut Sunita Williams explains: “It’s like a little phone booth[公用電話亭], but it’s pretty comfy[舒適輕松的]and it doesn’t matter if I turn over and sleep upside down. I don’t have any sensation in my head that tells me I’m upside down.”

Brushing your teeth in a place where you can’t have a tap or a sink can be a challenge. Can you imagine the mess that running water would make in zero gravity[重力]? Canadian astronaut Chris Hadfeld uses a straw to put a big blob[一滴]of water from a sealed[密封的]bag onto an ordinary toothbrush and adds a little toothpaste—which he has to swallow[吞咽]when he’s done.

Daily exercise is essential. The lack of gravity makes bones more brittle[脆弱的]and muscles lose strength—so astronauts are encouraged to work out[鍛煉]for at least two hours a day.

The role of astronauts in the International Space Station is to act as lab technicians for scientists back on Earth. So they spend their time maintaining their environment and performing and monitoring[監(jiān)控，執(zhí)行]experiments in a confined[狹窄的]space about the size of a Boeing 747. Almost every task is carefully planned by mission control[航天地面指揮中心]—although most astronauts spend their frst days losing stuff until they get used to sticking everything they use to the walls with Velcro, duct tape[強(qiáng)力膠帶]or clips.

One of their most valued perks[特別待遇]is the view from “the office,” dominated by that gigantic[龐大的]blue ball down there, sitting in the darkness of space. Wow! Absolutely breathtaking!

? 閱讀課文并回答問題。

1) How high is the International Space Station?

1）危害癥狀。桃小幼蟲蛀果后，在果面上留有針尖狀蛀孔，孔口有白色果膠，數(shù)日后干成白色蠟粉。幼蟲蛀入果實(shí)后縱橫串食，最終到達(dá)果心，蛀食種子。受害蘋果果實(shí)生長(zhǎng)受阻，果面凹凸不平，俗稱“猴頭果”。幼蟲在果內(nèi)一邊蛀食，一邊將糞便排于蟲道內(nèi)，被害果成為“豆沙餡”，失去食用價(jià)值。后期幼蟲老熟后向外咬出香頭大的“脫果孔”，脫離果實(shí)。

2) True or false? Astronauts will get dizzy when they sleep upside down.

3) Why do astronauts lose things?

4) What becomes weak if astronauts don’t exercise?

5) Who tells astronauts what to do?

? 選擇一個(gè)意思合適的單詞填入句子的空格處。

1) Here’s ＿＿. You can use it to keep the sheets of your essay together.

Velcro a clip a straw some perks

2) My job is just to keep an eye on this experiment and see if thereis anything different. I’m just ＿＿it.

performing maintaining monitoring foating

3) My mobile, my keys...wait till I get my＿＿ and we are ready to leave.

stuff duct tape Velcro gravity

4) You look tired after walking all day. Come on, sit on this ＿＿ chair.

upside down comfy confned brittle

答案

? 閱讀課文并回答問題。

1) It orbits 400km above the Earth’s surface.

2) False. According to astronaut Sunita Williams, they don’t have any sensation in their head telling them they are upside down. They don’t even feel it.

3) Because in zero gravity, everything that is not stuck down, it foats.

4) Their bones and muscles.

5) Scientists on Earth and mission control.

? 選擇一個(gè)意思合適的單詞填入句子的空格處。

1) a clip； 2) monitoring；3) stuff；4) comfy