试题与答案

如图所示,轻质杠杆可绕O转动,杠杆上吊一重物G,在力F作用下杠杆静止在水平位置,

题型:操作题

题目:

如图所示,轻质杠杆可绕O转动,杠杆上吊一重物G,在力F作用下杠杆静止在水平位置,l为F的力臂,请在图中作出力F的示意图及重物G所受重力的示意图。

答案:

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参考答案:C解析: ①“升起”“腾起”都可表示火焰、气体、烟雾等由低往高移动,但从词义程度轻重看,用“腾起”更与“巴格达遭空袭”这一语境吻合;②“敦促”表示诚恳地催促,适用于外交场合,“督促”表示上...

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题型:阅读理解

WIRES is short for Wildlife Information and Rescue Service. It is an Australian  organization, established(成立) in 1985 to care for injured and orphaned(失去母兽的) native wildlife. WIRES has a network of hundreds of volunteers who rescue and care for native animals until they are well enough to be released (释放)into the wild. Volunteers look after rescued animals in their own homes and are trained in the special needs of native wild animals.

When Australians find a native animal in trouble, they often call WIRES for help. WIRES may be asked to look after a possum that has been attacked by a cat, rescue a large lizard that has got its head caught in a drink can, or care for a baby animal who has lost its mother. People call WIRES when they want to move a dangerous snake away from their garden or when they find a seabird that has swallowed(吞下) a fishing line or an owl with a broken wing. Sometimes kangaroos jumped onto the road in front of cars and are run over. Australians are encouraged to check the pouch(育儿袋)of dead kangaroos in case there is a baby in it. WIRES volunteers find themselves caring for many babies orphaned in this way.

Each year, in the summer, parts of Australia suffer from(受苦) huge bush fires. These fires not only destroy human homes and put people in danger, but they also destroy animal habitats(栖息地)and endanger the animals living in the bush. After a big fire, WIRES and other organizations go into the district to pick up surviving animals. They are treated for burns, shock, smoke and other problems and then cared for until new location can be found for them.

WIRES is also involved in educating people in the importance of caring for wildlife and wildlife habitats. Volunteers visit schools and other public places to talk about native animals. Sometimes they bring a bat or some other interesting animals with them to show to people who may never have seen one up close before.

小题1:What is WIRES?

A.It helps the pets in the street to look for their homes.

B.It rescues and cares for animals in order to set them free.

C.It consists of hundreds of volunteers from all over the world.

D.It provides services for wild animals and keeps them in a zoo.小题2:Which of the following is TRUE according to the passage?

A.Australians often call the police for help if they find animals in trouble.

B.Volunteers in WIRES are afraid to take snakes away from communities.

C.Australian government asks WIRES workers to save animals after a fire.

D.WIRES often go to the public places to give lessons of wild animals.小题3:What’s the passage mainly about?

A.It mainly talks about what WIRES members usually do.

B.It tells us why WIRES develops so quickly in Australia.

C.It teaches us how WIRES can train wild animals at home.

D.It mainly tells us how we can join in WIRES successfully.

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