The first steam engine was devised by Thomas Newcomer at the end of the 17th century, a

A.小学科学

B.高中信息技术

C.高中通用技术

D.以上3科均写入

A.艺术

B.美术

C.文化

D.文学

A.以学生为中心，强调主动实践和充分体验

B.与生活紧密结合，注重在真实情境中学习

C.关注多个学科之间的关联，课程动态建构

D.倡导合作学习

E.提供一个整体过程，或技术设计、或科学探究、或工程实践

(机车).Indeed，the animal body is a machine.It is a machine composed of many parts doing some particular kind of work for which a particular kind of structure fits it.

All the parts are dependent on each other and work together for the accomplishment of the total business of the machine.The locomotive must be provided with fuel, such as coal or wood or other combustible(易燃的)substance，the consumption of which provides the force or energy of the machine.The animal body must be provided with fuel, which is called food, which similarly provides the energy of the animal.

Oxygen must be provided for the combustion of the fuel in the locomotive and of the food in the body.The locomotive is composed of special parts，the fire box for the storage and combustion (燃烧)of fuel; the steam pipes for the carriage of steam; the wheels for locomotion (移动); the chimney for throwing off waste.

The animal body is similarly composed of such parts as the stomach for the storage and digestion of food, the organs for the throwing off of waste water, the blood vessels for the carriage of oxygen and food-holding blood, the legs or wings for locomotion.

1.The body of an animal is like a locomotive in that ().

A.it is composed of many parts that work just like different parts of a locomotive

B.it can do some particular kind of work

C.it works like all the machines in the world

D.both the animal and the locomotive need coal or wood as their fuel

2.Every part of the animal body().

A.works independently

B.works dependently on each other

C.looks like the same as that of a machine

D.has the same structure as that of a machine

3.The energy of an animal is provided by().

A.throwing off waste

B.the combustion of fuels such as coal or wood

C.consumption of food

D.the carriage of blood

4.The function of animal s legs is like__of a machine.

A.the wheels

B.chimney

C.steam pipes

D.the firebox

5.The steam pipes of a locomotive work like the()of an animal body.

A.stomach

B.blood vessels

C.legs

D.wings

A.on

B.in

C.at

D./

A.on

B. in

C. at

D. for

Before the first non-stop flight made in 1949, it ________ necessary for all planes to land for refueling.

A) would be B) has been

C) had been D) would have been

A.TOP

B.LIMIT

C.FIRST

D.ROWNUM