有一空心铝球质量是500g,体积为600cm3,当把它放入足量水中静止时,所受浮

题型:问答题

问题:

有一空心铝球质量是500g,体积为600cm3,当把它放入足量水中静止时,所受浮力是多大?如把它放入足量密度为0.8×103㎏/m3的煤油中,静止时受到的浮力又是多大?

考点:浮力及阿基米德原理
题型:问答题

It was Mother’s Day. A man stopped his car at a flower shop to order some flowers. He wanted the shopper to send the flowers to his mother, who lived two hundred miles away.

As he got out of his car, he found a young girl sitting on the road crying.

He asked her what was wrong and she replied,“I want to buy a red rose for my mother, but I only have seventy-five cents. A rose costs two dollars.”

The man smiled and said, “Come into the shop with me, and I’ll buy you a rose.’

He bought the little girl her rose and ordered his own mother’s flowers. As they were leaving, he offered to drive the girl home. She said, “Yes, please! You can take me to my mother.” She brought him to a cemetery(墓地), where she placed the rose on the grave.

The man was moved. He returned to the flower shop, picked up the flowers he ordered, and drove two hundred miles to his mother’s house.

Today is the day for your mother. Send a flower to your kind and beautiful mother.

小题1:The man went to the shop to ________.

A.have a rest

B.help the girl

C.buy some food

D.order some flowers小题2:The man’s mother lived ________ away from him.

A.2 kilometers

B.75 miles

C.200 miles

D.200 kilometers小题3:The girl was crying on the road because ________.

A.she was hungry

B.she got hurt

C.she couldn’t afford a rose

D.she couldn’t find her way home小题4:After the man bought the girl a rose, they went to ________ together.

A.the cemetery

B.his shop

C.the girl’s home

D.his mother’s house小题5:We can learn from the passage that _________.

A.the girl loved flowers very much

B.the girl loved her mother very much

C.the shopkeeper sent the flowers to the man’s mother

D.the man drove to his mother’s house to look after her

题型:问答题

氨基糖苷类抗生素消除的主要途径是()

A.以原型经肾小球滤过排出

B.以原型经肾小管分泌排出

C.经肝药酶氧化

D.与葡萄糖醛酸结合后排出

E.被单胺氧化酶代谢

题型:问答题

车辆发生热轴时,如温度超过运转热,但手尚可较长时间触摸,轴颈稍有变色,属于()。

A.激热

B.强热

C.热砌

D.微热

题型:问答题

网球肘的压痛点在何处()

A.肱骨外上髁

B.肱骨内上髁

C.尺骨鹰嘴

D.桡骨茎突

E.鼻烟窝

题型:问答题

我国对外开放采取的办法是()

A.分步骤、有层次、由点到面、逐步推进、全面展开

B.有计划、由外到内、全面展开

C.全方位、多层次、宽领域

D.全方位、多渠道、多层次、宽领域

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