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The compass(罗盘) is a device that is absolutely necessary for the【56】of ships and airplanes. Hikers often need a compass, too. Anyone who does not use 【57】roads should have a compass. A compass will always 【58】to know your direction. If you have a map【59】land marks such as roads, mountains, rivers, and lakes, you can immediately find out where you are. The compass 【60】you to place your map in an 【61】position according to the directions. You can then 【62】 where you are with points on the map. The Chinese were the first people 【63】 the magnet(磁铁)【】a compass. They first used compasses to 【65】their ships between the years 100 B. C. and A.D. 100. their compasses were and 【66】devices.【67】The magnetic iron into their compass, these early seamen placed the magnet on a cork or a piece of straw. They then put the iron-cork system in a bowl of water, the【68】magnet turned easily, aligning(排成列) itself with the directions north and【69】. Later the Chinese invention was put together【70】a Babylonian invention, the degree. Then the compass became 【71】. Compasses 【72】well on wooden ships.【73】, when metal ships appeared in the 1800s, the magnetic compass was【74】. the metal in the ship【75】the magnet. Modem ships now use the gyrocompass and the radio compass for navigation. (46) A．judgment B．operation C．manufacture D．accuracy
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【单选题】Questions 57 to 61 are based on the following passage. Within fifteen years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste. T...
A.
attempts to find efficient ways of recycling wastes
B.
efforts to protect the environment in British cities
C.
a good way to locate plants for waste recycling
D.
a cheap way to get energy from waste materials
【单选题】Questions 57 to 61 are based on the following passage. Within fifteen years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste. T...
A.
The issue of rubbish-dealing can not be completely solved.
B.
Recycling plants will be in great need in rural areas.
C.
The plants can process a wide variety of materials.
D.
Effective ways of sorting out rubbish have long been in existence.
【单选题】Within fifteen years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste. The word rubbish could lose its meaning because everythi...
A.
to get prepared to do
B.
to get along well with
C.
to try to complete
D.
to be very good at
相关题目：
【单选题】Questions 57 to 61 are based on the following passage. Within fifteen years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste. T...
A.
attempts to find efficient ways of recycling wastes
B.
efforts to protect the environment in British cities
C.
a good way to locate plants for waste recycling
D.
a cheap way to get energy from waste materials
【单选题】Questions 57 to 61 are based on the following passage. Within fifteen years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste. T...
A.
The issue of rubbish-dealing can not be completely solved.
B.
Recycling plants will be in great need in rural areas.
C.
The plants can process a wide variety of materials.
D.
Effective ways of sorting out rubbish have long been in existence.
【单选题】Within fifteen years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste. The word rubbish could lose its meaning because everythi...
A.
to get prepared to do
B.
to get along well with
C.
to try to complete
D.
to be very good at
参考解析：
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