更多"Passage Two Born without sight, 7-"的相关试题:
[单项选择]Passage Two
Born without sight, 7-year-old Lucas Murray used to be so afraid of walking that he wouldn’t take a step without his parents. He wouldn’t walk on a bumpy surface.
But now, Lucas has become more mobile than his parents ever imagined, running with friends, playing basketball and jumping on a trampoline (蹦床)—all on his own.
The incredible change is owed to a technique called echolocation, similar to the method used by dolphins and bats, that allows Lucas to paint a picture of his surroundings using the sound he creates himself.
To "see" the world around him, he dicks his tongue and listens to the echo that bounces back. From the sound, he can make out the location, depth and shape of objects around him, allowing him to navigate (导航) even unfamiliar areas.
Though it’s estimated that only about 5% to 10% of the blind population now uses a sonar (声呐系 统)-type approach, the Murrays hope it could someday become as
A. Daniel Kish’s help
B. his parents’ encouragement
C. sufficient outdoor physical exercises
D. his willingness to make constant efforts
[单项选择]Passage Two
Do you go to bed without brushing your teeth You may think that not brushing is not a big deal. But caring for your mouth can prevent serious (and even embarrassing) problems.
Cavities happen to just about everyone. A cavity is a diseased spot in the tooth. It all starts with a sticky film made up of bacteria. That film coats your teeth and gums. The bacteria eat sugars from things you eat and drink. That produces acids. Then, the acids eat away at your teeth’s hard outer coating, called enamel.
If you don’t brush regularly to remove the film, or if you keep missing a spot, those acids keep eating away the teeth’s enamel. That is how you get a cavity. "The larger it gets, the closer it gets to the nerve, increasing the chance of severe pain," says Lynn Ramer, president of the American Dentists’ Association.
A cavity will never just go away by itself. It will only get worse. "Left untreated, 100 percent of the time a cavity will spread," says Dr.
A. a diseased spot in the tooth
B. a film of acids coating the teeth
C. a sticky film made up of bacteria
D. a hard outer coating covering the teeth
[填空题]Mr Jones’ daughter was born two months after the month which begins with the second letter after the thirteenth letter of the alphabet. When was Mr Jones’ daughter born
[单项选择]Passage 2
| Without proper planning, tourism can
cause problems. For example, too many tourists can crowd public places’ that are
also enjoyed by the inhabitants of a country. If tourists create too much
traffic, the inhabitants become annoyed and unhappy. They begin to dislike
tourists and to treat them impolitely. They forget how much tourism can help the
country’s economy. It is important to think about the people of a destination
and how tourism affects them. Tourism should help a country to keep the customs
and beauty that attract tourists. Tourism should also advance the well-being of
local inhabitants. Too much tourism can be a problem. If
tourism grows too quickly, people must leave other jobs to work in the tourism
industry. This means that other parts of the country’s economy can
suffer. On the other hand, if there is not enough tourism,
people can lose jobs. Businesses can also lose money. It costs a great deal of
money to build large hotels, airports, air terminals, first-class roads, and
other support facilities needed by tourist attractions. For example, a major
international-class tourism hotel can cost as much as 50000 dollars per room to
build. If this room is not used most of the time, the owners of the hotel lose
money. Building a hotel is just a beginning. There must be many
support facilities as well, including roads to get to the hotel, electricity,
sewers to handle waste and water. All of these support facilities cost money. If
they are not used because there are not enough tourists, jobs and money are
lost. |
Which of the following has most probably been discussed in the para. that goes before the para. ______.
A. It is extremely important to develop tourism
B. Building roads and hotels are essential
C. Support facilities are highly necessary
D. Planning is of great importance to tourism
[单项选择]
Born in 1879, in Ulm, Germany, Einstein was two years old when his parents moved to Munich. There his father opened a business in electrical supplies. As a boy, Einstein did not learn to talk until later than others of his age, and in his early childhood he was not considered especially bright. But by the time he was 14 years old, he had taught himself advanced mathematics from textbooks. By them he knew what he wanted to be when he grew up. He wanted to be a physicist and &vote himself to research.
Einstein could not afford to pay for the advanced education he needed, because his family business had declined. Later, he and his family were forced to leave Munich to live in Milan, Italy, where they had relatives. As for him, the family did manage to send him to a technical school in Switzerland, and later to the Federal Institute of Technology in Zurich. In 1901, when Einstein was 22 years old, he began teaching, and in 1902, be went to work as a patent office examiner
A. His teaching.
B. His theory of relativity.
C. His theory on advanced mathematics.
D. His research.
