C
A gadget which makes water out of air could become the greatest househo1d invention since the microwave.
Using the same technology as a dehumidifier（除湿器），the Water Mill is able to create a ready supply of drinking water because it can always get it from an unlimited source—the air．
The company behind the machine says not only does it offer an alternative to bottled water in
developed countries, but it is a solution for the millions who face a daily water shortage．
The machine works by drawing in wet air through a filter（过滤器）and over a cooling instrument which changes it into water droplets．It can produce up to 1 2 liters a day．The Water Mill will also produce more water when storms pass over, as the amount of water which is contained in the air increases. In keeping with its eco-development, the machine uses the same amount of electricity as three lights.
Inventor Jonathan Ritchey said: “The demand for water is off the chart. So people are looking for freedom from water distribution systems that are shaky and unreliable.”
The machine, which is about 3 feet wide, is likely to cost ￡800 when it goes on sale here in the spring. Its maker, Canadian Firm Element Four, roughly calculates that a litre of water cost around 20p to produce.
Environmentalists state that half the world’s population will face water shortage because of climate change by 2080. One in five is said to lack access to safe drinking.
The Water Mill is not effective in areas where the amount of water contained in the air is below about 30 percent, but in Britain that won’t be much of a problem.
63．What does the underlined word “it” refer do?
A．Drinking water.       B．Invention. C．Microwave.      D．Water Mill.
64．What do we learn about the machine?
A．It works in the same way as microwaves.
B．It is very expensive for families to afford.
C．It absorbs steam and turns it into water.
D．It helps to make the water clean to drink.
65．What does the passage lead us to believe?
A．The cost of water will go up.  B．Bottled water will disappear sooner.
C．The machine is energy saving. D．The machine will be popular worldwide.
66．What’s the best title for the passage?
A．A New Way to Solve Water Problem.    B．A Machine to Make Water out of Air.
C．A Dehumidifier to Produce Water.     D．An Absolutely New Invention

C
A gadget which makes water out of air could become the greatest househo1d invention since the microwave.
Using the same technology as a dehumidifier（除湿器），the Water Mill is able to create a ready supply of drinking water because it can always get it from an unlimited source—the air．
The company behind the machine says not only does it offer an alternative to bottled water in
developed countries, but it is a solution for the millions who face a daily water shortage．
The machine works by drawing in wet air through a filter（过滤器）and over a cooling instrument which changes it into water droplets．It can produce up to 1 2 liters a day．The Water Mill will also produce more water when storms pass over, as the amount of water which is contained in the air increases. In keeping with its eco-development, the machine uses the same amount of electricity as three lights.
Inventor Jonathan Ritchey said: “The demand for water is off the chart. So people are looking for freedom from water distribution systems that are shaky and unreliable.”
The machine, which is about 3 feet wide, is likely to cost ￡800 when it goes on sale here in the spring. Its maker, Canadian Firm Element Four, roughly calculates that a litre of water cost around 20p to produce.
Environmentalists state that half the world’s population will face water shortage because of climate change by 2080. One in five is said to lack access to safe drinking.
The Water Mill is not effective in areas where the amount of water contained in the air is below about 30 percent, but in Britain that won’t be much of a problem.
63．What does the underlined word “it” refer do?
A．Drinking water.       B．Invention. C．Microwave.      D．Water Mill.
64．What do we learn about the machine?
A．It works in the same way as microwaves.
B．It is very expensive for families to afford.
C．It absorbs steam and turns it into water.
D．It helps to make the water clean to drink.
65．What does the passage lead us to believe?
A．The cost of water will go up.  B．Bottled water will disappear sooner.
C．The machine is energy saving. D．The machine will be popular worldwide.
66．What’s the best title for the passage?
A．A New Way to Solve Water Problem.    B．A Machine to Make Water out of Air.
C．A Dehumidifier to Produce Water.     D．An Absolutely New Invention
对于g=9.8N/㎏的理解正确的是（    ）
A．质量为1㎏的物体所受的力是9.8N
B．1㎏="9.8N"
C．在地球上，质量是1㎏的物体所受的重力大小9.8N
D．在地球上，质量是9.8㎏的物体所受的重力大小是 1N
关于近视眼，在不戴眼镜时看不清物体，这时物体成的像在眼睛： （    ）
A．视网膜上B．视网膜前方C．视网膜后方D．以上都不对
简要说明下列事实所运用的物理知识：
①、 人推车，车也推人。                                          ；
② 、在重物下垫上几根圆棍，推起来省力多了。                                    ；
③、 用重垂线检查墙体是否竖直。    
如图所示为甲、乙、丙三个物体运动的s—t图象或v—t图象，则在0—3s这段时间内，物体的运动快慢是（   ）
A．甲最快B．乙最快
C．丙最快D．乙、丙速度相等，大于甲的速度
小芳家住在一高层电梯楼上，她从超市购物回来乘电梯上楼到家中，电梯匀速上升时，手对购物袋的拉力为F1，电梯停在她家所在的楼层时，手对购物袋的拉力为F2，关于F1、F2的关系，下列说法正确的是（    ）
A． F1＞F2B． F1＜F2C． F1=F2D． F1≥F2
如图所示，木块放在表面光滑的小车上并随小车一起沿桌面向左做匀速直线运动，当小车遇障碍物而突然停止运动时，车上的木块将（   ）
A．立即停下来
B．立即向前倒下
C．立即向后倒下
D．仍继续向左作匀速直线运动
很多动物靠着自身的独特本领改变摩擦，下列动物改变摩擦方法所起的作用与其它不同的是（   ）
A．鲫鱼体表有黏滑的液体B．哺乳动物骨关节腔内的滑液
C．蚯引体表的刚毛D．海豹光滑的表皮
如图所示，物体A在B的牵引下沿水平桌面向右运动，从物体B触地开始到物体A刚好静止下来这段时间内，物体A受水平桌面的摩擦力大小f随时间t变化关系的图象是（  ）
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