阅读下面短文，从短文后所给各题的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。
A
BUKHANNON, West Virginia – Two rescue teams slowly moved along a two-mile path on Monday night to the site of coal mine explosion that trapped 13 miners, who had not been heard from since the early morning accident．
Meanwhile, at a nearby church, more than 250 family members and friends gathered, waiting for updates on the rescuers’ progress．
The miners were trapped at about 6:30 and many families weren’t informed of the accident until about 10 a．m．—more than three hours after it happened． “It’s very upsetting, but you’ve got to be patient, I guess,” said John Helms, whose brother, Terry, was trapped in the mine．
The trapped miners were about 260 feet underground and about 10,000 feet from the Sago Mine’s entrance, said Roger Nicholson, general counsel from International Coal Group．
At a late night news conference, Nicholson said one team had advanced about 4, 800 feet in the four hours since entering the mine just before 6 p．m．Another team entered the mine about 30 minutes later．
He said the crew was very experienced, with some members having worked underground for 30 to 35 years．The miners were equipped with about one hour of breathable oxygen each．The company has not released the names of the miners．
The cause of the explosion was not immediately known．High levels of carbon monoxide were discovered shortly after the explosion, which delayed rescue efforts, but those levels have since subsided（减退）, authorities said．
1．According to the passage, we can infer that ________．
A．all the miners who were trapped underground were still alive B．communication with the trapped miners was cut off C．the two rescue teams entered the mine at the same time D．the rescue started as soon as the accident happened
2．If the first team advanced at an average speed, they could dig about _______ per hour．
A．1,000 feet B．2,400 feet C．1,200feet D．4,800feet
3．Where can the passage be seen?
A．In a magazine． C．In a science book．
B
The oil spill（泄漏）in the Gulf of Mexico has been dangerous for wildlife in the area. Birds floating in the water and diving for fish become coated in the sticky oil, which then affects their ability to stay warm. Also the birds can be poisoned by the oil.
Olivia Bouler, a fifth grader from New York, said she had to do something. She wrote a letter to the National Audubon Society, a wildlife conservation（保护）organization. In her letter, Olivia offered to sell her bird illustrations（图画）to raise money for Audubon’s efforts. The National Audubon Society accepted her offer. Dalta Willis, an official at the organization, said that Audubon received many letters. Olivia’s stood out from the rest.
Soon after, people began sending requests to Olivia for one of her bird illustrations but only after making a donation. When the Internet company, AOL, heard about the project, they made a $25,000 donation and offered Olivia a spot in their online artists gallery.
“Since the spill, everybody feels so helpless,” Olivia said. With her project, she says she’s giving people a way to show that they care. There are more than 17,000 followers. She can barely keep up with requests from donors for her artwork. To help Olivia manage the large demand, AOL is offering prints of one of her illustrations.
So far, Olivia has brought in more than $ 125,000 in donations for relief work in the Gulf. Most of the money has gone to the Audubon Society. Olivia never expects her project to go as far as it has. She says everyone, old or young, can make a great contribution to environmental protection. She hopes her success will show other children that they can make a difference, too. 4．Sea birds are in danger after the oil spill because . A．the fish they eat are poisoned by the oil B．the sticky oil makes it hard for them to float C．a coating oil makes it hard for them to stay warm D．it is hard for them to find clean water to drink
B．On an advertisement． D．In a newspaper．
5．What did Olivia do to help deal with the oil spill problem in the Gulf?
A．She wrote to a company and asked it to donate money. B．She offered to sell her bird illustrations to raise money. C．She asked the National Audubon Society to help out. D．She called on other children to work together with her. 6．According to the text, Olivia . A．has given AOL a lot of help with her project B．has expected that the project would work so well C．has created her own gallery to sell her bird illustrations D．has brought in over $ 125,000 in donations
7．From the last paragraph, we know that Olivia hopes . A．the Audubon Society can make full use of the donations B．her project will go on as long as the birds need help C．other children can try their best to protect the environment D．more people take part in her project and h elp the birds
C
A new electronic driver’s assistant will detect road signs and warn drivers not to ignore them. The Australian invention is part of a global effort to make drivers more aware of road signs, especially those concerned with safety. Eventually, GPS-based systems could entirely replace road signs, but until then, ideas like the new driver assistance system(DAS) developed at the National Information and Communications Technology Australia (NICTA) Lab in Canberra may help.
DAS uses three cameras: one to scan the road ahead and a pair to monitor where the driver is looking. The road camera is installed on the rear view mirror and a “gaze monitoring” pair are set on either side of the dashboard (仪表盘).
Images from the cameras are fed to a computer system fitted behind the dash. Software on the PC detects road signs and works out where the driver is looking. The speedometer is also connected to the computer, so the system always knows how fast the car is traveling.
The software scans the video pictures and detects road signs by recognizing their symmetrical (对称的) shapes: rectangles, diamonds, octagons or circles. Once it is detected, the
sign is compared to a list of signs stored in the computer’s memory. If it recognizes a stop sign, the computer checks if the car is slowing down.
The computer uses a package to analyze images from the cameras and work out where the driver is looking. If the driver appears not to have seen a sign, and the car’s speed does not change, a warning is issued.
In preliminary tests DAS performed “pretty well” even at high speeds. Full-scale road trials, due to begin soon, will test the system with many more types of road signs. 8．What is the best title for this passage? A．An Australian Invention C．A GPS-based System 9．In a car with DAS, .
A．the are two cameras in the front of the car and one at the back B．the road camera is placed in front of the car to scan the road C．three cameras are connected to a computer system in the car D．three cameras are set side by side in the front of the car
10．The underlined word “monitor” in the 2nd paragraph most probably means “ ”. A．keep track of
B．check the quality of B．DAS, Driver’s Assistant D．Three Cameras in DAS
C．work out perfectly D．test on a regular basis
11．Which of the following statements is TRUE according to the passage? A．An octagon, like a circle or a diamond, is a stop sign. B．So far, DAS system hasn’t been tested thoroughly yet. C．The cameras can directly warn the driver of a road sign. D．Because of full-scale road trials, DAS has been proven a success.
D
Since many of you are planning to study at a college or university in this country, you may be curious to know what you usually do in a typical week, how you can get along with your fellow students, and so on. These are the questions I want to discuss with you today.
First let's talk about what your weekly schedule will look like. No matter what your major may be, you can expect to spend between four and six hours a week for each class attending
lectures. Lectures are usually in very large rooms because some courses such as introduction to sociology or economics often have as many as two or three hundred students, especially at large universities. In lectures, it’s very important for you to take notes on what the professor says because the information in a lecture is often different from the information in your textbooks. Also, you can expect to have exam questions based on the lectures. So it isn't enough to just read your textbooks; you have to attend lectures as well. In a typical week you will also have a couple of hours of discussions for every class you take. The discussion section is a small group meeting, usually with fewer than thirty students where you can ask questions about the lectures, the reading and the homework. In large universities, graduate students, called teaching assistants, usually direct discussion sections.
If your major is chemistry, or physics, or another science, you'll also have to spend several hours a week in the lab doing experiments. This means that science majors spend more time in the classroom than non-science majors do. On the other hand, people who major in subjects like literature or history usually have to read and writer more than science majors do. 12．The main purpose of the text is .
A．to help the students to learn about university life B．to persuade the students to attend lectures C．to encourage the students to take part in discussions D．to advise the students to choose proper majors
13．We can learn from the passage that university professors .
A．spend about 5 hours on lectures each week B．must join the students in the discussion sections C．prefer to use textbooks in their lectures
D．require the students to read beyond the textbooks 14．A discussion section does NOT include . A．working under the guidance of university professors B．talking over what the students have read about the course C．discussing the problems related to the students’ homework D．raising questions about what a professor has said in a lecture 15．According to the author, science majors .
A．have to work harder than non-science majors
B．spend less time on their studies than non-science majors C．consider experiments more important than discussions D．read and write less than non-science majors
1—15 BCDCB DCBCA BADAD
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