Dr.Jack Todd is very interested in clean water .__1._,so it's natural that he is to developer of a small and affordable system(系统）to clean waste water, His “Living  Machine" can clean wastewater in your home or in your business.

__2._ The wastewater goes into a big plastic tank where bacteria(细菌）start to break down the waste.A few days later after it is dealt with, the water is brought into a greenhouse filled with plants and fish.With the help of sunlight, the plants and animals remove more chemicals from the water,making it cleaner,Then the water can be reused for washing or bathing _3.__ but the water is clean enough for watering the flowing, washing the dog, or even for bathing or swimming.

The advantage of this technology is that it is affordable and good for the environment. __4.__. It can help to use less fresh water, and it can help keep the water supply unpolluted.

If you have a bottle of water recycled(再利用) from urine(尿), would you drink it? Astronauts at the ISS may soon do so.

NASA(美国航空航天局) said it would use a high-tech machine to recycle wastewater at the ISS. The machine will recycle water for washing hands, shower water, water for brushing teeth and even urine to make drinking water. It will save millions of dollars each year.

At present, each ISS astronaut uses about 4.4 liters(升) of water every day. It costs about 24 million dollars a year to send water up to the ISS. A liter of water costs about $ 11,000.

The machine will be sent to the ISS later. NASA hopes it will recycle about 93% of all the water used on the station.

Will the water be clean? Different chemicals will be put in the wastewater. The water will be heated to 130℃ to kill bacteria(细菌). Scientists say that the recycled water is thousands of times better than the water from a city tap.

1.NASA will use a high-tech machine to recycle wastewater at the ISS to ______.

A．protect the ISS

B．make the astronauts work harder

C．provide better water and food for the astronauts

D．save the cost of sending water up to the ISS

2.At present it costs NASA about ______ dollars to transport water up to an astronaut at the ISS a day.

A．4.4 thousand                           B．11 thousand

C．48.4 thousand                          D．24 million

3.Scientists plan to get rid of bacteria in the wastewater by ______.

A．freezing                              B．heating

C．shaking                               D．precipitating(沉淀)

4.The passage mainly tells us something about ______.

A．water recycling at the ISS

B．the International Space Station

C．a high-tech machine

D．the cost of NASA

5.Which of the following sentences is TURE?

A．The recycled water is much better than that from a city tap.

B．The high-tech machine will recycle all the water used on the station.

C．The ISS astronauts use more water than us.

D．The high-tech machine can only recycle urine to make water.

During the Second World War．John's family didn't have a washing machine．Therefore，1._____ （keep）clothes clean became a problem for them.

Before long，a family friend decided 2.______（join）the army and his wife was going with  him．John's family told them that they could take care of their furniture while they were away. To the family’s surprise，the friend suggested they should use his Bendix washing machine．“It would be better for it to 3.______（use），rather than sitting quietly，”he said．

Young John helped with the washing，and he developed a deep love of the old，green Bendix．

later，the war ended and the family's friend returned．When he came4._____(take) the machine away．John became very sad．His mother saw this and said to him．“Son， you must remember that machine5.____(not belong) to us in the first place. It was a gift for us6._____(be) able to use it for such a long time．So，instead of 7._____ （be）sad about the loss．Let’s be grateful that we 8._____ （be）able to use it at that time.”

We have all experienced loss：loss of people and things．However，if we see the thing we9.______（lose）as a gift that we were given for a time，maybe the sad memories 10._____( change) into thankful ones．

Welcome to my home. This is our sitting-room(客厅). It is a big room. There is a big TV set in the middle(中间). The TV set is on a long table. There is a sofa in front of the TV set. Mother is sitting on the sofa, watching TV. Next to the sofa, there is a lamp
(灯). There is a washing-machine(洗衣机) in the corner(在····的角落) of the sitting room. On the machine, there is piece of beautiful cloth(布). There are some flowers on the window, the window is in the white wall. I like my home.
6. There aren’t any ____________ in the sitting room.
A. TV sets      B. desks      C. sofas
7. The TV set is __________ the sitting room.
A. in the middle of      B. in the corner of      C. in the front of
8. Are there any flowers on the window?
A. Yes, they are.       B. No, they aren’t.      C. Yes, there are.
9. Washing-machine is used for (用来做)________.
A. washing dishes      B. washing clothes    C. washing clothe
10.The sitting room is_________.
A. not good        B. small       C. big