定轴转动

海沧大桥旁的圆柱形旗杆横截面半径为4厘米，高12米，旗杆的体积是______立方厘米．

冲积扇常常形成于河流的入海口部位。

Buster Brown was a thief and a good one too，he thought． He’d never been caught by the police because he never took chances．He was always prepared for any unforeseen event or emergency.

Confidently，he stood outside the house of his intended victim(受害者)and read the sign on the front gate of the house．“Don't worry about the dog—be aware of the owner!” it said．Buster smiled and found his way in．

The house looked quite normal outside，but inside it was very exotic with fascinating objects on display．As he began putting them into his bag，a dog came into the room．It stopped when it saw Buster，then wagged its tail madly and went over to him，licking his outstretched hand．  "Good boy，” Buster whispered． “What a great guard dog you are—trying to lick me to death.” Satisfied he'd made friends with the dog，Bluster began to wander round the house，choosing items to put in his bag．His skilled eye picked out only the best antiques(古董)：a pair of silver candleholders，a silver tea-and-coffee service，etc．．His new friend，the dog，sat and watched，as if wondering what was happening．

“Well，boy，” Buster whispered，finally．“That might do．Any more and I won't be able to carry it!” He swung the heavy bag onto his shoulders, just as the lights came on, nearly blinding him. He shielded his eyes with his hand.

"You're a very silly person," the figure in the doorway said, his voice dry and dust. As the man came closer, Buster could see he was well dressed. His face seemed familiar, but Buster couldn't quite place where he had seen him before.

"You should have taken more notice of the sign outside," the man rasped. "I knew about this attempted robbery last week and I also know you will end up behind bars for 20 years. Fancy trying to rob the house of the world's greatest fortune-teller!"

小题1:Why was Buster so confident?

A．He was not afraid of dogs.

B．He knew the owner of the house lived alone.

C．The house had no security alarm.

D．He had never been caught by the police.小题2:Which of the definitions is closest in meaning to the word "exotic" in the third paragraph?

A．Messy and untidy.

B．Rich and expensive.

C．Foreign and unusual.

D．Comfortable and calming.小题3:How did Buster decide which objects to take?

A．He took those that were easy to carry in his bag.

B．He took only the best antiques.

C．He took those that he knew he could sell easily.

D．He looked for silver objects.小题4:What punishment waits for Buster Brown?

A．A long prison sentence.

B．A prison sentence with hard labor.

C．A heavy fine.

D．Community service for 20 years.

与谷氨酸合用对治疗消化道溃疡有协同作用的药物是（）

A.金银花

B.泽泻

C.枳壳

D.冰片

E.血余炭

某肥皂厂从建厂以来一直专注于开发肥皂产品，因其质量卓越、价格公道而广受市场好评，有自己稳定的消费群体。为了扩大经营规模，企业决定增加洗衣粉的生产。根据市场预测，可知这种洗衣粉市场状况的概率是畅销为0.3，一般为0.5，畅销为0.2。洗衣粉产品生产采取大、中、小三种批量的生产方案。

该肥皂厂要取得最大经济效益，要采用的决策方案应该是（）。

A．大批量

B．中批量

C．小批量

D．不确定