马德堡半球实验有力地证明了___________的存在。

My name ____ Jack. Liu Ying and Sun Mei ____ my friends.[ ]

A. is; are

B. is; is

C. are; is

D. is; am

Among various programs, TV talk shows have covered every inch of space on daytime television. And anyone who watches them regularly knows that each one is different in style. But no two shows are more opposite in content, while at the same time standing out above the rest, than the Jerry Springer and Oprah Winfrey shows.

Jerry Springer could easily be considered the king of "rubbish talk". The topics on his show are as surprising as can be. For example, the show takes the ever-common talk show titles of love, sex, cheating, and hate, to a different level. Clearly, the Jerry Springer show is about the dark side of society, yet people are willing to eat up the troubles of other people's lives.

Like Jerry Springer, Oprah Winfrey takes the TV talk show to its top. But Oprah goes in the opposite direction. The show is mainly about the improvement of society and different quality of life. Contents are from teaching your children lessons, managing your work week, to getting to know your neighbors.

Compared to Oprah, the Jerry Springer show looks like poisonous waste being poured into society. Jerry ends every show with a "final word". He makes a small speech about the entire idea of the show. Hopefully, this is the part where most people will learn something very valuable.

Clean as it is, the Oprah show is not for everyone. The show's main audience are middle-class Americans. Most of the people have the time, money and ability to deal with life's tough problems. Jerry Springer, on the other hand, has more of a connection with the young adults of society. These are 18-to 21year-olds whose main troubles in life include love, relationship, sex, money and drug. They are the ones who see some value and lessons to be learned through the show's exploitation.

46. Compared with other TV talk shows, both the Jerry Springer and the Oprah Winfrey shows are ______.

A. more interesting          B. unusually poplar       C. more detailed           D. more formal

47. Though the social problems Jerry Springer talks about appear unpleasant, people who watch the shows ______.

A. show disbelief in them                                         B. are ready to face up to them

C. remain cold to them                                     D. are willing to get away from them

48. Which of the following is likely to be a topic of the Oprah Winfrey show?

A. A new type of robot.                                    B. National hatred.

C. Family income planning.                              D. Street accident.

49. We can learn from the passage that the two talk shows ____.

A. have become the only ones of its kind                   B. exploit the weaknesses in human nature

C. appear at different times of the day                    D. attract different people

50. What is the advantage of the Jerry Springer show?

A. The show exposes the dark sides of society.

B. The show pours poisonous waste into society.

C. Jerry sums up the whole idea of the show.

D. Jerry talks abou the improvement of society.

“计算机辅助制造”的英文缩写是

A．CAD

B．CAI

C．CAM

D．CAT

分散剂的作用？

孩子大多是被学校忽视的艺术家，但这并不否定命题绘画的重要性。实际上，命题绘画与自由发挥是相辅相成的。前者训练的是孩子们的逻辑性和观察力，而后者培养的是他们的敏感性和平衡感。法国评论家安德烈·马尔罗曾说过：“孩子既是艺术家，又不是艺术家。因为此时的他们被自己的天赋所支配，而并非他们在支配天赋。”
安德烈·马尔罗在此最想表达的观点是______。

A．单凭天赋是不能成为艺术家的
B．孩子的天赋可能大多被忽视了
C．孩子们无法意识到自己的天赋
D．学会支配天赋才能成为艺术家