【正文】 s, speculation continued over the existence of some form of life, in either the present or past. In 1996 scientists discovered anic pounds and minerals in a meteorite（隕石）， consisting of Martian rock, that collided with Earth around 11,000 . These pounds suggest that Mars may have been inhabited by anisms more than three billion years ago. 21． Why did people in the 19th century believe the existence of intelligent life on Mars? A． Because the surface of Mars seemed to be geometric. B． Because the lines were drawn across the surface of the pla. C． Because a system of canals was thought to be there. D． Because it was the Martians that built the canals. 22． The “canals” on Mars have proved to be according to the passage. A． the minor geologic characteristics of Mars B． natural valleys on the surface of Mars C． rivers that have kept flowing since ancient times D． a system that irrigates the whole surface 23． What are the Mars?s easonal changes in color believed to be? A． The natural changes on the pla. B． The seasonal cycles. C． The movement of some lifeform. D． The storm of dust in its atmosphere. 24． How is the 1996 discovery related to the possible existence of anisms on Mars? A． The meteorite containing anic pounds is part of Mars. B． A Martian rock struck Earth about 11,000 years ago. C． The anisms came back to life after the collision with Earth. D． The inhabiting anisms appeared more than three billion years ago. 25． How many arguments in this passage lead to the belief of the existence of life on Mars? 162 A． Two. B． Three. C． Four. D． Five. Questions 2630 are based on the following weather forecast: Weather Forecast The following forecast shows for the listed cities the projected weather conditions and the expected range of temperatures from the afternoon high to the evening low. Atlanta: Mostly fair. 8870℉ . Minneapolis: Mostly cloudy. 6850℉ . Boston: Partly cloudy. 7861℉ . New Orleans: Mostly fair. 9273℉ . Chicago: Thunderstorms likely. 8267℉ . Philadelphia: Hazy and warm. 9068℉ . Cleveland: Mostly cloudy. 8468℉ . Phoenix: Sunny and warm. 9966℉ . Dallas: Thunderstorms likely. 9175℉ . Pittsburgh: Partly cloudy. 8164℉ . Denver: Rain likely. 5343℉ . St. Louis: Thunderstorms likely. 8670℉ . Houston: Partly cloudy. 9078℉ . San Francisco: Mostly fair. 7360℉ . Kansas City: Thunderstorms likely. 7363℉ . Seattle: Mostly fair. 7450℉ . Las Vegas: Sunny and warm. 9356℉ . Toronto: Rain likely. 8368℉ . Los Angeles: Mostly sunny. 8860℉ . Washington: Partly cloudy. 8872℉ . Miami: Partly cloudy. 8879℉ . 26． According to the forecast, . A． Kansas City will be warmer than Toronto B． Temperatures will be the lowest in Seattle and Minneapolis C． The weather will be fine in most of the listed cities D． More than half of the listed cities are cloudy or rain likely 27． Among the following four cities, the difference between the afternoon high and the evening low is smallest in . A． Kansas City B． Miami C． Atlanta D． Seattle 28． Which of the following cities is closest to Miami in weather conditions? A． Boston. B． Atlanta. C． Washington. D． Houston. 29． The difference between the afternoon high and the evening low is greatest in . A． Seattle B． Los Angeles C． Las Vegas D． Phoenix 30． The differences between the afternoon high and the evening low are the same in . A． Chicago, Dallas, Kansas City, and St. Louis 163 B． Atlanta, San Francisco, New Orleans, and Seattle C． Cleveland, Dallas, St. Louis, and Washington D． Pittsburgh, Miami, Houston, and Boston Part Three Cloze Directions: For each blank in the following passage, choose the best answer from the choices given below. Mark your answer on the ANSWER SHEET by drawing with a pencil a short bar across the corresponding letter in the brackets. In November of 1902, President Theodore Roosevelt was on a hunting trip in Mississippi. His hunt was going 31 that day, and he couldn?t seem to find anything worthy of 32 his rifle. Then, his staff captured a black baby bear for the President to shoot, but he could not. The thought of shooting a bear that was tied to a tree did not seem sporting, so he 33 the life of the baby bear and set it free. Based on this story, a famous political cartoonist for the Washington Star drew a cartoon, which showed Teddy Roosevelt, rifle 34 , with his back turned on a cute（可愛(ài)的） baby bear. Morris Michtom, owner of a Brooklyn toy store, was 35 by the cartoon to make a stuffed baby bear. Intending it only as a display, he placed the stuffed bear in his toy store 36 , and next to it placed a copy of the cartoon from the newspaper. To Michtom?s surprise, his store was flooded by customers 37 to buy. He asked for and received President Roosevelt?s 38 to use his name for the bandsewn bears that he and his wife made, and the “Teddy Bear” was born! Michtom was soon manufacturing Teddy bears 39 the thousands. The money from the sale enabled him, in 1903, to 40 the Ideal Toy Company. 31． A． hastily B． poorly C． punctually D． steadily 32． A． supporting B． opening C． shouldering D． firing 33． A． spared B． protected C． saved D． checked 34． A． in his hand B． in the hand C． in hands D． in hand 35． A． encouraged B． inspired C． urged D． pictured 36． A． window B． door C． table D． counter 37． A． eager B． reluctant C． interested D． straight 38． A． order B． permission C． argument D． file 39． A． at B． of C． by D． for 40． A． sell B． change C． form D． invest Part Four Dialogue Completion Directions: There are ten short inplete dialogues between two speakers, each followed by your choices marked A, B, C and D. Choose the answer that appropriately suits the conversational 164 context