Distilled
Distilling
Boiling
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第1题：
B
The world is not only hungry，it is also thirsty for water． this may seem strange to you，since nearly 75% of the earth is covered with water． But about 97% of this water is sea water．Man can only drink and use the other 3% fresh water that comes from rivers，lakes，under-ground and other places． And we cannot even use all of that，because some of this fresh water has been made dirty．
At the moment，this small amount(数量) of fresh water is still enough for us． However，our need for water is getting greater and greater． Only if we take steps to solve this problem now，we can get away from a serious world water shortage later on． The people of the world cannot have an enjoyable life without enough clean water．
On one hand we should stop wasting this little water of ours，on the other hand we should find ways to reuse it，but this has not been done widely．
Today，in most large cities，water is used only once and it then returns to the sea or runs into underground places．lf we can make it clean again，it can be used once more just as if it were fresh from a spring．
But even if large cities reuse its water，we still would not have enough in the future． Where．could we turn to next for water? To the ocean! How can we do to make use of this great a-mount of sea water? We can take the salt from the water to make it fresh．
So if we take all these steps，we'll be in no danger of drying up!
( )26． Why does the writer say that the world is thirsty for water?
A． The amount of fresh water is really very small．
B． The people of the world waste too much water．
C． The people of the world have to drink a lot of water every day．
D． There are too many people in the world needing water．
第2题：
A.is
B.them
C.its
D.they
第3题：
A.The high, the fast
B.Higher, faster
C.The more high, the faster
D.The higher, the faster
第4题：
Which statement about damage control is TRUE ________．
A.A hole in the hull at the waterline is more dangerous than a hole below the inner bottom
B.The amount of water entering a ship through a hole varies inversely to the area of the hole
C.Water flowing into a lower compartment on a ship is more dangerous than water on deck or flowing into an upper compartment
D.Water flowing over the forecastle bulwark is more dangerous than a hole in the hull at the waterline
第5题：
Conditions for crossing a rough bar are usually best at ______.
A.low water slack
B.high water slack
C.high water ebb
D.high water flood
第6题：
From this selection we may conclude that the king's crown______.
A. moved less water than pure gold of the same size
B. moved more water than pure gold of the same weight
C. moved more water than pure gold of the same size
D. moved less water than pure gold of the same weight
第7题：
By saying "the world has been spared a t.rue water war" (Line 1, Para.4), the author means（ ）
[A] the water supply in the world is more than needed
[B] the world has saved enough water to avoid the war
[C] the world has never suffered a war triggered by water
[D] the world spares no effort to avoid a war caused by water
第8题：
We can infer that the plumbing ______ at that time.
A. cost little
B. was more expensive than a water system
C. was too expensive for every family to afford
D. was not necessary
第9题：
Prior to getting underway in fresh or brackish water，the Master must ______.
A.log the density of the water
B.secure all overboard discharges
C.take on fresh water ballast
D.clean the sides with fresh water
第10题：
Topside area from deep loadline to bulwark to be thoroughly washed down with ______．
A.highly pressure fresh water
B.high pressured fresh water
C.highly pressured fresh water
D.high pressure fresh water