固体废弃物的生物处理方法有哪些？

He was 11 years old and went fishing every chance he got from the dock at his family's cabin on an island in the middle of a New Hampshire lake.

On the day before the bass season opened, he and his father were fishing early in the evening, catching sunfish and perch（鲈鱼）with worms. Then he tied on a small silver lure（鱼饵）and practiced casting. The lure struck the water and caused colored ripples in the sunset, then silver ripples as the moon rose over the lake.

When his pole doubled over, he knew something huge was on the other end. Finally, he very gingerly lifted the exhausted fish from the water. It was the largest one he had ever seen, but it was a perch . The boy and his father looked at the handsome fish. Then the father lit a match(火柴) and looked at his watch. It was 10 P.M.--- two hours before the season opened. He looked at the fish, then at the boy.

"You'll have to put it back, son," he said.

"Dad!" cried the boy.

"There will be other fish," said his father.

"Not as big as this one," cried the boy.

He looked around the lake. No other fishermen or boats were anywhere around in the moonlight. He looked again at his father. Even though no one had seen them, nor could anyone ever know what time he caught the fish, the boy could know everything by his father's clear voice that the decision could not be changed. He slowly worked the hook(钩) out of the lip of the huge bass and lowered it into the black water.

The creature swished its powerful body and disappeared. The boy suspected that he would never again see such a great fish.

That was 34 years ago. Today, the boy is a successful architect in New York City. His father's cabin is still there on the island in the middle of the lake. He takes his own son and daughters fishing from the same dock.

He was right. He has never again caught such a magnificent fish as the one he landed that night long ago. But he does see that same fish---again and again---every time he comes up against a question of ethics（道德规范）.

小题1:When did the story happen?

A．Early morning

B．Late afternoon

C．Late night

D．In the bass season小题2: Why did the father ask his son to put the perch back?

A．Because the father disliked the perch.

B．Because the father was afraid of being fined.

C．Because the ethics must be observed.

D．Because the son was more experience in fishing than his father.小题3:When does the architect (the father’s son) think of that perch put back?

A．When he takes his own son and daughters fishing from the same dock.

B．When he builds many famous buildings.

C．When he pays a visit to his old father.

D．When he faces some problems about ethics.小题4:Which word can not be used to describe the boy’s father?

A．honest

B．unselfish

C．serious

D．generous小题5:From the passage, we can learn _________.

A．how we can get the handsome fish

B．how we master some skills of going fishing

C．how we understand our parents’ words is very important

D．how we do things in good and right ways.

H₂除了表示氢气外，还可以表示：①氢元素；②一个氢分子；③两个氢元素；④氢气是由氢元素组成；⑤每个氢分子由两个氢原子构成；⑥两个氢原子．正确的一组是（　　）

A．①③④

B．②③④

C．②④⑤

D．②④⑥

. Please don’t worry about your daughter any more. She is out of danger and ____ a good nurse.

A．take the charge of

B．takes charge of

C．in charge of

D．in the charge of

胡桃夹综合征二维声像图特征是：①左肾静脉狭窄前扩张部位近端内径比狭窄部宽>2倍②右肾静脉狭窄前扩张部位近端内径比狭窄部宽>2倍③脊柱后伸位15～20min后，左肾静脉受压明显，扩张部近端内径比狭窄部宽>4倍④脊柱前伸位15～20min后，右肾静脉受压明显，扩张部近端内径比狭窄部宽>4倍

A.①③ 

B.②④ 

C.以上各项均不是 

D.以上各项均是

带电作业不应使用（）、（）、（）、（）的工具。