单选题 Directions: After reading the following passage, you will. find 5 questions or unfinished statements, numbered 36 through 40.For each question or statement there are 4 choices marked ,4) , B), C) arid D ) . You should make the correct choice and mark the corresponding letter on the Answer Sheet with a single line through the center.
Early this year, Captain Startup was flying an aero plane over New Zealand. There was a television camera crew onboard. Suddenly, out in the night sky, a bright sphere came into view. Everyone on board saw it and everyone thought ,"UFO" -- Unidentified Flying Object. Many people believe that a UFO is a visiting craft from outer space. The came racrew went into action and started filming. That week people all over the world saw the film of this mysterious light on their television screens. Someone described the object as "a shining ping pong ball". What was it? Was it a spaceship full of visitors from another planet? The Captain and the film crew believed it was. Other observers had many different explanations. Some say it was Venus. Some say it was just a trick of light. The people on the aeroplane were not the only ones who saw the "UFO". An air traffic controller also saw it on his radar screen. When a reporter asked him if he believed in UFOs, he said, "I don' t know what they are, but I' ve got an open mind on them. " Like many scientists, he thought that a flock of birds caused dots on his radar screen when the UFO appeared.
Most astronomers now believe that what these people saw was almost certainly the planet Venus. At that time of year it is very bright and easy to see. And from a moving aeroplane it can appear to be moving fast. So far there is no proof that UFOs or spaceships from other planets do exist.

单选题 The UFO the people on board the plane saw is ______.

A. a long object
B. a square object
C. a round object
D. a short object

【正确答案】 C

【答案解析】语义题。从第一段可以看出，那个物体是sphere，球体。错误选项说明：A)和D)形状和长短无关；B)不是方的。

单选题 Which of the following statements is NOT true?

A. The captain believed that the UFO was visiting craft from outer space.
B. The camera crew believed that the UFO was visiting craft from outer space.
C. The air traffic controller believed that the UFO was visiting craft from outer space.
D. Many people believed that the UFO was visiting craft from cuter space.

【正确答案】 C

【答案解析】是非题。要选择错误的选项，从第二段可以看出，那个空中交管员认为那是一群鸟在他的雷达屏幕上造成的圆点。A)，B)和D)可以在第一段中找到。

单选题 Which of the following possibilities is NOT mentioned?

A. The UFO was from outer space.
B. The UFO was another plane.
C. The UFO was an unusual effect of light.
D. The UFO was Venus.

【正确答案】 B

【答案解析】是非题。要选出文中没有提到的可能性，文中并没有说那可能是另一架飞机。A)，C)和D)都可以在第一段中找到。

单选题 "I don't know what they are but I' ve got an open mind on them" (in the second paragraph) probably means that______.

A. he believes the UFO comes from outer space
B. he disbelieves the UFO comes from outer space
C. he neither believes nor disbelieves that the UFO comes from outer space
D. he agreed with most of the people

【正确答案】 C

【答案解析】语义题。第二段中那个空中交管员说他思想开明, 因此他可能相信也可能不相信飞碟是从外太空来的。A)和B)都太绝对了；D)他并不是要同意大多数人的意见。

单选题 According to the passage, the writer probably means to say that ______.

A. UFO doesn't really exist
B. UFO is really unidentified
C. UFO comes from outer space
D. UFO is only people's imagination

【正确答案】 B

【答案解析】主旨题。从最后一段可以看出，到目前为止，还没有确切的证据证明飞碟确实是存在的，所以有没有飞碟还是不确定的。既然无法确定，A)，C)和D)都过于武断。