20．Almost everyone has a question or two about living in space．What is life really like in space？And what do astronauts（宇航員）do there？
Astronauts living in space have the same hygiene needs people do on Earth．When they wake up，they wash their hair，brush their teeth and go to the bathroom as well．However，because of microgravity（微重力），astronauts take care of themselves in different ways．For example，they use a kind of special matter to wash their hair and leg restraints（腿部固定裝置）to position themselves when they use the toilet．
Astronauts eats three meals a day：breakfast，lunch and dinner．Some food can be eaten in the natural form such as fruit．Other foods require adding water such as noodles．There are no fridges in space，so space food must be stored and prepared properly to avoid going bad．
Besides morning routine（常規） and eating in space，astronauts perform many tasks including checking the machines，updating computer equipment（更新電腦設備），etc．At the same time，the control center on Earth sends messages to the astronauts through voice or email with new instructions to assist them in their daily routines．
What's more，living in space is not just all work and no play．A popular way of relaxations is looking out of the window．And they can also enjoy themselves by watching movies，reading books，playing cards and talking to their families during their free time．
46．The underline word"hygiene"in this passage properly meansA in Chinese．
A．衛生
B．飲食
C．心理
47．As for eating in space，which statement is NOT true？
A．Astronauts eat three meals a day as people do on Earth
B．Fruit can be eaten in the natural form
C．Food can be kept fresh in fridges
48．What's the main idea of Paragraph（段落）Four？
A．Eating in space
B．working in space
C．Relaxing in space．
49、Besides checking the machines and updating computer equipment，astronauts also need toC in there daily work．
A．communicate with friends on Earth
B．control the people at the control center on Earth
C．received messages and follow the instructions from the control center on Earth
50．From this passage，we learn thatB．
A．life in space is actually the same as life on Earth
B．living in space is different but interesting
C．astronauts have little free time in space．
分析 很多人好奇宇航員在太空中的生活，本文從衛生、飲食、工作等方面介紹了宇航員在太空中如何工作生活的．
解答 46．A 細節理解題，根據后文的解釋When they wake up，they wash their hair，brush their teeth and go to the bathroom as well．當他們醒來，他們洗頭發、刷牙、也去浴室．可知這是描述的衛生方面，故選A．
47．C 細節理解題，根據There are no fridges in space太空里沒有冰箱，可知選項C的敘述是錯誤的，故選C．
48．B 細節理解題，根據段落四Besides morning routine（常規） and eating in space，astronauts perform many tasks including checking the machines，updating computer equipment（更新電腦設備），etc．在太空中除了早晨的常規事物和飲食之外，宇航員還要執行很多任務，包括檢查機器，更新電腦設備，可知這些描述是關于工作方面的，故選B．
49．C 細節理解題，根據astronauts perform many tasks including checking the machines，updating computer equipment（更新電腦設備），etc．At the same time，the control center on Earth sends messages to the astronauts through voice or email with new instructions to assist them in their daily routines．在太空中除了早晨的常規事物和飲食之外，宇航員還要執行很多任務，包括檢查機器，更新電腦設備等．同時，地球上的操控中心通過語音或電子郵件給宇航員發送信息來輔助他們的日常工作．故選C．
50．B 細節理解題，根據And they can also enjoy themselves by watching movies，reading books，playing cards and talking to their families during their free time．他們可以在空閑時間通過看電視、讀書、跟他們的家人說話來尋找樂趣．由此可知，他們的太空生活雖然不同但很有趣．故選B．
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