题目内容
A.had B.took C.made D.arranged?
They ________ a bet on the white horse．
A．had
B．took
C．made
D．arranged
The United States is a sports-loving nation. Sports in America take various forms: organized competitive struggles, athletic games, hunting and fishing. Most sports are seasonal, so that what is happening in sports depends upon the time of year.
Baseball is the most popular sport in the US. It is played throughout the spring and summer, and professional baseball teams play well into the fall.
Football is the most popular sport in the fall. The game originated as a college sport more than 75 years ago. It’s not the same as European football or soccer. In American football there are 11 players as well on each team, and they are dressed in padded uniforms and helmets because the game is rough and injuries are likely to occur. It is still played by almost every college and university in the country.
Basketball is the winner sport in American schools and colleges. Like football, basketball originated in the US, many Americans prefer it to football because it is played indoors throughout the winter and because it is a faster game. And the famous NBA games are considered the best of this game.
Other sports attracting a great many people include wrestling, boxing and horse racing. Although horse-racing fans call themselves sportsmen, the exactness of the term is questionable, as only the jockeys who ride the horses in the races can be considered athletes. The so-called sportsmen are the spectators, who do not come primarily to see the horses race, but to bet upon the outcome of each race. Gambling is the attraction of horse racing.
Baseball is so popular in America that some professional teams play it until ___________.
A. spring B. summer C. fall D. winter
When playing football, American players are dressed in a special uniforms ___________.
A. to avoid unexpected injuries
B. to play it like European football
C. to make the game rough enough
D. to look like professional players
Many Americans prefer basketball to football because______.
A. NBA games are very popular
B. it is originated in the US
C. it is much faster than football
D. it is played indoors throughout winter
Horse-racing fans can’t be exactly considered as sportsmen because they ________.
A. mainly stand and watch the races
B. don’t ride horse in the races
C. are only interested in the results
D. don’t care who wins in the races
The underlined word “jockeys” in the last paragraph refers to _______.
A. the person who bets upon the the race
B. the person who cares about horse-racing
C. the rider who enjoys watching the race
D. the rider who competes in horse-racing
Bacteria(细菌) are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in micron. One micron is a thousandth of a millimeter; a pinhead is about a millimeter across, Rod-shaped bacteria are usually from two to four microns long, while rounded ones are generally one micron across. Thus, if you magnified a rounded bacterium a thousand times, it would be just the size of a pinhead, while a grown-up human enlarged by the same amount would be over a mile tall.
Even with an ordinary microscope(显微镜), you must look closely to see bacteria. Using a magnification of 100 times, one can hardly find bacteria. Nor can one make out anything of their structure(结构), of course. Only by using special colors, can one see that some bacteria have wavy-looking “hairs” called flagella. Others have only one flagellum. The flagella move round a central point, pushing the bacteria through the water. Many bacteria lack flagella and cannot move about by their own power, while others can move along over surface by some little-understood “machinery”.
From the bacterial point of view, the world is a very different place from what it is to humans. To a bacterium, water is as thick as molasses(糖浆) is to us. Bacteria are so small that they are affected by the movements of the chemical molecules(分子) around them. Bacteria under microscopes, even those with no flagella, often jump up and down in the water. This is because they knock with the water molecules and are pushed this way and that.
36. The underlined word magnified means _______________.
A. enlarged B. widened
C. killed D. caught
37. We know from the passage that _______________ is the smallest.
A. a pinhead B. a rounded bacterium
C. a microscope D. a rod-shaped bacterium
38. The relationship between a bacterium and its flagella is most nearly like which of the following?
A. A rider jumping on a horse back
B. A ball being hit by a bet
C. A boat powered by a motor
D. A door closed by wind
39. Why does the writer compares water to molasses in the third paragraph?
A. To tell us how difficult it is for bacteria to move through water.
B. To suggest that bacteria are fond of different liquids.
C. To show different chemicals are of different structures.
D. To show that bacteria are the best swimmers.
40. Which of the following is the main topic of the passage?
A. The characteristic (特点) of bacteria.
B. How bacteria reproduce.
C. The various parts of a bacterium’s body
D. How bacteria cause diseases.
