问题 单项选择题

下列描述符合原文意思的是:

A.非线性系统中参量极微小变化,往往表现为对外界影响成比例变化

B.线性行为可以促使空间规整性结构形成和维持,而非线性却表现为色散引起的波包弥散,结构的消失

C.线性现象一般表现为时空中的平滑运动,非线性现象表现为从规则运动向不规则运动的转化和跃变

D.针对一些特殊的非线性作用,我们可以参照傅里叶变换、拉普拉斯变换等来进行处理

答案

参考答案:C

阅读理解

On Halloween Night, children go trick-treating in their neighborhoods. Dressed up as ghosts, skeleton devils, and various other characters, children knock on doors to collect their treats. Seldom do they actually perform a “trick”.

It is thought that trick-or-treating comes from an old English custom. On All Souls Day, poor people went begging and promised to say prayers in exchange for food. Apple bobbing, still a favorite Halloween game, was originally an ancient ceremony honoring the harvest time.

A jack-o’-lantern is placed on porches and windows to tell children that treats are available. The legend was that a man named Jack could enter heaven because he played tricks on the devil. As punishment, he had to wander the earth carrying a lantern waiting to be judged fit to get into heaven.

People believed that Halloween marked the connection between the world of the living and the world of the dead. This meant that ghosts would roam the earth on this night. Some believed that these ghosts would go back to the homes they lived in before they died.

Thankfully, Halloween is an amusing night when children can dress up and get a bag full of candy. We don’t have to worry about ghosts. Or do we?

小题1:Apple bobbing was an ancient ceremony held originally to ____.

A.honor the harvest time

B.honor the dead

C.honor the living

D.play a trick on each other小题2:The underlined word “roam” is close in meaning to ____.

A.come back

B.place

C.collect

D.walk around小题3:Which of the following is not true?

A. On Halloween Night, children often dress up as ghosts.

B. On Halloween Night, children often perform tricks.

C,. Trick-or-treating comes from an old English custom.

D. Children can get a lot of candy on Halloween Night.

小题4:According to the passage, Halloween is a(n) ____ festival.

A.sad

B.bad

C.interesting

D.boring

填空题