请述园林树木调查的意义。

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

经过本章的学习，我们知道，人要听清声音，除了听觉系统要正常外，还必须满足下列条件：一定要有正在           的物体，即发声体．发声体和人耳之间必须有传声的           ．发声体振动的         一定在人的听觉范围内．声音到达人耳处的响度至少要达到       dB．

订阅《小学生学习报》的钱数与份数成正比例．______．

干髓术后发生残髓炎者应进行以下哪种治疗（）

A.除去充填物重新失活后再行干髓术

B.拔除患牙

C.除去充填物，进行根管治疗或牙髓塑化疗法

D.不除去充填物，只使用药物消炎

E.除去充填物开放，服用止痛药物、症状消失后重新充填

下列关于商业汇票贴现的说法中，不正确的有( )。

A．贴现后的商业汇票，所有权属于贴现银行

B．贴现的商业汇票，持票人与出票人应具有真实的商品交易关系

C．贴现到期，贴现银行不获付款的，贴现银行应向出票人追索要款

D．贴现期限，从汇票出票日起至到期日止