He needshis homework this evening . [ ]

生态系统中能量流动与物质循环的关系是（　　）

A．虽然二者是各自独立的过程，但它们是同时进行的

B．物质的合成和分解过程，伴随着能量的储存、转移和释放

C．先有物质循环，然后才有能量流动

D．由于有了能量的流动，所以才有了物质循环

下列有关基因工程的叙述，正确的是： [ ]

A．DNA连接酶的作用是将两个黏性末端的碱基连接起来

B．培育抗虫棉的过程中，导入抗虫基因时只能以受精卵为受体细胞

C．目的基因与运载体结合的过程发生在细胞外

D．目的基因导入受体细胞后，受体细胞即发生基因突变

试述我国现行宪法对非公有制经济的政策调整。

John Steinbeck once said, “All Americans believe they are born fishermen. For a man to admit to a distaste in fishing would be like denouncing (公开指责) mother – love or hating moonlight.”

I can’t say that I’m the biggest John Steinbeck fan. Actually, the only thing I can ever remember reading by him was “The pearl” when I was in middle school, but I couldn’t agree more with the man when it comes to fishing. Whether I am on a boat in the middle of the Lay Lake, fishing off the shores of the Florida Keys for tarpon or catching rainbow trout in the Shoshone River of Wyoming, fishing is my life.

According to the American Sports Fishing Association, the fishing industry brings in more than $ 116 billion per year from fishermen across the country.

Though a beautiful picture to imagine, fishing is much more than that. Fishing is a way of life for many people and a way to escape everyday stress. Being a fisherman makes me a member of a wonderful group of people extending to all walks of life. Even President Obama can be found fishing on his farm in Texas with his good friend Roland Martin when the job gets too stressful.

I can remember fishing with my grandfather when I was 5 years old on his boat at Lake Mitchell. Although I didn’t understand what I was doing, I did know that my grandfather was happy and that made me happy. Since then I’ve spent the past 16 years on the rivers and lakes of Alabama.

After days of practice, before and after work, I slowly developed an understanding of fishing. My boss, Ric Horst, took me back to the Shoshone, and I managed to bring in a 19–inch cutthroat trout. Fishing with Ric was a life–changing experience for me. He not only showed me how to fish correctly, but also told me how fishing could be a way to escape your problems.

Since then, prime–time season seems to take forever to arrive.

Now, with the ending of February and beginning of March in sight, the excitement of heading out Lake Tuscaloosa or Lake Lurleen before classes and catching something has finally returned.

小题1:What John Steinbeck said in the first paragraph implies that ______________.

A．Americans are believed to be the offspring of fishermen

B．it is unthinkable for an American to admit his dislike of fishing

C．all Americans are expert at fishing

D．those who dislike fishing would not love their mother小题2:．The writer came to understand the real meaning of fishing ______________.

A．when he was reading “The pearl” by John Steinbeck

B．when he went fishing with his grandfather at Lake Mitchell

C．after he had spent 16 years on the rivers and lakes of Alabama

D．after he went fishing with his boss, Ric Horst on the Shoshone小题3:What can be inferred from the text?

A．The author is at most 21 years old.

B．The author regards fishing as a very important part in his life.

C．The author agreed with John Steinbeck the most when he was in middle school.

D．President Obama often goes fishing in public in order to collect idea for his job.小题4:．According to the author, __________________.

A．people can get to know VIPs when fishing.

B．people can smooth away all the troubles by fishing

C．Fishing is a way of communication

D．Fishing is a way to make a living for most American people小题5:．What is the purpose of the writing?

A．To describe the writer’s experience and understanding of fishing.

B．To explain the reason why so many Americans like fishing.

C．To make others understand the industry of fishing.

D．To express his opinions about fishing in different time of the year.

根据我国《民法通则》的规定，授权委托书是委托代理的组成部分，其法律后果是产生( )。

A．代理权

B．委托责任

C．民事责任

D．被代理权