方程x3=x+1的根所在的区间是( ) A.(0,1) B.(1,2) C.(2

题型:选择题

问题:

方程x3=x+1的根所在的区间是(  )

A.(0,1)

B.(1,2)

C.(2,3)

D.(3,4)

考点:函数零点的判定定理
题型:选择题

阅读理解。

     Marco Polo was born in Venice in 1254. He was the most famous foreigner to visit Asia during the

Middle Ages. He wrote a book about his travels. In his book he wrote all the things he saw and heard.

Many people in the west read the book, but few believed what Marco Polo said in the book. He told

stories about a lot of strange people and places. But at that time nobody knew these places and the

people.

     When Marco Polo was still very young, he decided to travel together with his father. It took them

more than three years to travel to China, later he became a friend of the Chinese emperor (皇帝) . He

learned to speak Chinese when he traveled around, and he talked to many people in Chinese. The

emperor liked him and made him a Chinese Official. At that time Marco Polo was only thirty years old.

After nearly seventeen years’ travel in the east, Marco and his father wanted to go back home.

     When Marco and his father arrived in Venice many years later, their family and friends saw them

again. They couldn’t believe their eyes because Marco and his farther were quite old. Marco Polo and

his father had been away for almost 25 years.

1. Marco Polo was                 foreigner who ________ to Asia during the Middle Ages.

2. Marco Polo wrote a famous book ________ “The Travels of Marco Polo". He told people _______

he saw and heard in the book.

3. Many people in the west read the book, but ________ believed ________.

4.It took Marco Polo and his father over three years to________.And Marco Polo worked as _______

in 1284.

5. Marco Polo and his father had been away ________. When they got back home in Venice, they were ________.

题型:选择题

患者,男性,13岁。上前牙内倾,下牙弓前段拥挤,造成下牙弓前段缩短。磨牙关系:中性牙合。

矫正此类畸形前期可选择()

A.斜面导板导下颌向前

B.前牙平面导板下加双曲舌簧+单曲舌卡+活动矫治器

C.分裂簧分裂基托矫治器

D.双侧后牙牙合垫式矫治器

E.单侧后牙牙合垫式矫治器

题型:选择题

急性腹膜炎最主要的体征是()

A.腹痛

B.呕吐

C.全身中毒症状

D.腹膜刺激征

E.电解质紊乱

题型:选择题

海伦第一次自己组的句子是()。

题型:选择题

转8A型同一车辆最大与最小车轮直径差不大于()mm。

A.15

B.20

C.30

D.40

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