非强制检定的计量器具，企业可以放任不检。

有真正的根、茎、叶，体内有输导组织，但生殖离不开水的植物类群是

A．藻类植物

B．蕨类植物

C．裸子植物

D．被子植物

有一种心理学理论认为，要想快乐，一个人必须与另一个人保持亲密关系。然而，世界上最伟大的哲学家们孤独地度过了他们一生中的大部分时光并且没有亲密的人际关系。因此，这种心理学理论一定是错误的。
以下哪一项是上面的结论所必须假设的

A．世界上最伟大的哲学家们情愿避免亲密的人际关系。

B．具有亲密的人际关系的人很少孤独地度过自己的时光。

C．孤独对于哲学家的沉思而言是必要的。

D．世界上最伟大的哲学家们是快乐的。

人的知识可以划分为直接经验和间接经验两个部分，直接经验是：

A．感性认识

B．理性认识

C．正确的认识

D．亲自实践获得的知识

阅读理解。

     Louis Armstrong had two famous nicknames (绰号). Some people called him Bagamo. They said his mouth

looked like a large bag. Musicians often called him Pops, as a sign of respect for his influence (影响) on the

world of music.

     Born in 1901 in New Orleans, he grew up poor, but lived among great musicians. Jazz was invented in the

city a few years before his birth. Armstrong often said, "Jazz and I grew up together."

     Armstrong showed a great talent for music when he was taught to play the cornet (短号) at a boy's home.

In his late teens, Armstrong began to live the life of a musician. He played in parades, clubs, and on the

steamboats that travelled on the Mississippi River. At that time, New Orleans was famous for the new music

of jazz and was home to many great musicians. Armstrong learned from the older musicians and soon became

respected as their equal.

     In 1922 he went to Chicago. There, the tale of Louis Armstrong begins. From then until the end of his life,

Armstrong was celebrated and loved wherever he went. Armstrong had no equal when it came to playing the

American popular song.

     His cornet playing had a deep humanity (仁爱) and warmth that caused many listeners to say, "Listening to

Pops just makes you feel good all over." He was the father of the jazz style and also one of the best-known and

most-admired people in the world. His death, on July 6, 1971, was headline news around the world.

1. Armstrong was called Pops because he _____. [ ]

A. looked like a musician

B. was a musician of much influence

C. showed an interest in music

D. travelled to play modern music

2. The third paragraph is developed _____. [ ]

A. by space

B. by examples

C. by time

D. by comparison

3. Which statement about Armstrong is true? [ ]

A. His tale begins in New Orleans.

B. He was born before jazz was invented.

C. His music was popular with his listeners.

D. He learned popular music at a boy's home.

4. Which would be the best title for the text? [ ]

A. The Invention of the Jazz Music.

B. The Father of the Jazz Style.

C. The Making of a Musician.

D. The Spread of Popular Music.

已知fibonacci数列：1，1，2，3，5，8，......，它可由下面公式表述： F(1)=1 n=1F(2)=1 n=2 F(n)=F(n-1)+F(n-2) n>2以下程序的功能是求F(49)的值，请在下划线处填上正确内容，使程序能正确运行。#include #include #include main(){ int i; double f[50];f[1]=________;f[2]=________; for(i=3;i<=49;i++) f[i]=________; printf("f[49]=%12.0lf",f[49]);}