题目内容

The cost directly ______ the amount of time spent on the job.

A.　　  sticks to　　   　　　　　　   　　　　　　  

B.　　  relates to

C.　　  leads to　　   　　　　　　   　　　　　　  

D.　　 refers to

 

答案：B
提示：

stick to 坚持；relate to 与……有关；lead to 导致；refer to 意思是指。根据句意，答案为B。

 


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　　Mary Masterman hasn't decided where she will attend college, but when she does, she'll have plenty of money to pay for it．The 17-year-old took home a ＄100,000 scholarship Tuesday as the top winner of the 2007 Intel Science Talent Search．

　　"It was a complete surprise," said the senior at Westmoore High School in Oklahoma City, Oklahoma．"I wasn't expecting it．" Masterman earned first place at this year's competition by building a low-budget spectrograph(摄谱仪)－ an instrument that identifies the unique characteristics, or "fingerprints," of different molecules．Spectrographs are used in a variety of fields, including astronomy, medicine, and law enforcement．They can sense the presence of explosives or drugs, and they can also help determine the age of a piece of artwork．

　　Normally, the cost of a spectrograph can run as high as ＄100,000．Mary, however, built her device－which she crafted from lenses, a laser, aluminum(铝)tubing, and a camera－for just ＄300．"I wanted to build one that was lower-costing so it would be more available to anyone interested in spectrography," she said．

　　Sticking to a budget was only half the battle．Getting the machine to work was another challenge．"I had to keep coming up with creative ways to adjust or change something," Mary admitted．"It took three months to build and another three months before it actually functioned properly．"

　　Mary competed with more than 1,700 other high school seniors in this year's science challenge．Forty finalists were invited to Washington, D．C．, where they presented their projects at the National Institute of Science．In all, 10 students took home awards for their innovative projects．

(1)

What’s the best title of the passage?

[　　]

A．

Oklahoma teen comes to a great invention

B．

Science competition for high school students

C．

The 2007 Intel Science Talent Search

D．

Oklahoma teen wins science scholarship

(2)

_________ is the biggest difference between Mary’s spectrograph and the normal one?

[　　]

A．

Use fields

B．

Function

C．

The cost

D．

The size

(3)

How long did it take Mary to put his spectrograph into use?

[　　]

A．

Three months．

B．

Half a year．

C．

About a year．

D．

Several years．

(4)

It can be inferred that the Intel Science Talent Search is _________．

[　　]

A．

a high-tech research institute of fine instruments

B．

an institute of science based in Washington, D．C．

C．

a most highly regarded science competition for high school students

D．

the nation's oldest award for the top scientists with great achievements

It is the season for long lines and frayed(紧张的) nerves. Here are some ways to survive a holiday flight.

Lighten up

Do yourself a favor and ship your presents. Nearly every US airline charges a fee to check a bag, so shipping gifts is now cheaper and more convenient than carrying them in your luggage.

Weigh your options

Not knowing what you’re going to pay for your luggage is annoying. So calculate your overweight-luggage fees at home. You can find the fees out in advance by visiting new site Luggage Limits, which provides the latest information on more than 90 airlines.

Leave amateurs in the dust

Trust us and get to the airport an extra half-hour early. The check-in and security lines are filled with inexperienced files, and it’s a hard walking. Plus, if you decide to cut it close you may not get onto the flight at all. To reduce costs, airlines have reduced on flights and routes. The remaining flights are more likely to be oversold, especially on busy travel days. Fliers who check in early are the least likely to get bumped from oversold flights.

Take it public

The rates for renting a car at the airport have more than doubled over the past year because rental lot inventories have decreased dramatically(现住地). True, renting at the airport is convenient, but it’s just not worth it anymore. Unless you really need a car, take public transportation, hop a cab, or beg a friend to pick you up at the airport instead.

Say no to bumper cars

Tell the people picking you up to avoid parking their car. They can hang out in their car for free while waiting to get a call from you when you land. Many airports, including JFK and LAX now feature this sensible choice.

How does the author think of shipping gifts?

A. Unnecessary.    B. Expensive.      C. Inconvenient.    D. Wonderful.

Airlines have reduced flights to _________.

A. deal with crisis    B. reduce the time for leave

C. lower the cost     D. provide more job chances

It can be learned from the passage that ______.

A. renting a car at the airport is expensive  B. taxis stay at the airport free of charge

C. cars can park at the airport for free      D. JFK encourages people to take a taxi

What’s the best title for the passage?

  A. Five ways to survive a holiday flight.    B. Good seasons for flight.

  C. Cars at the airport.                   D. How to board a flight

D

It is the season for long lines and frayed (紧张的) nerves. Here’s how to deal.

Lighten up

Do youreslf a favor and ship(运送) your presents. Nearly every U.S. airline charges a fee to check a bag, so shipping gifts is now cheaper and more convenient than carrying them in your luggage.

Weigh your options

Now knowing what you’re going to pay for your luggage is annoying. So calculate your overweight-luggage fees at home. You can find the fees out in advance by visiting new site Luggage Limits, which provides the latest information on more than 90 airlines.

Leave amateurs（不熟练者） in the dust

Trust us and get to the airport an extra half-hour early. The check-in and security lines are filled with inexperienced fliers, and it’s a hard walking. Plus, if you decide to cut it close, you may not get onto the flight at all. To reduce costs, airlines have reduced on flights and routes. The remaining flights are more likely to be oversold, especially on busy travel days. Fliers who check in early are the least likely to get bumped from oversold flights.

Take it public

The rates for renting a car at the airport have more than doubled over the past year because rental lot inventories(地产) have increased dramatically. True, renting at the airport is convenient, but it’s just not worth it anymore. Unless you really need a car, take public transportation, hop a cab, or beg a friend to pick you up at the airport instead.

Say no to bumper cars

Tell the people picking you up to avoid parking their car. They can hang out in their car for free while waiting to get a call from you when you land. Many airports, including JFK and LAX, now feature this sensible choice.

68.Airlines have reduced flights to_________.

A. deal with crisis                         B. reduce the time for leave

C. lower the cost                          D. provide more job chances

69. We can learn from the passage that____      .

A. taking a taxi at the airport is expensive

B. taxis stay at the airport free of charge

C. cars can park at the airport for free

D. JFK encourages people to take a taxi

70. What’s the best title for the passage?

A. 5 Ways to Survey a Holiday Flight.             B. Good Seasons for Flight

C. Cars at the Airport                     D. How to Board a Flight

 

It is the season for long lines and frayed(紧张的) nerves. Here are some ways to survive a holiday flight.

Lighten up

Do yourself a favor and ship your presents. Nearly every US airline charges a fee to check a bag, so shipping gifts is now cheaper and more convenient than carrying them in your luggage.

Weigh your options

Not knowing what you’re going to pay for your luggage is annoying. So calculate your overweight-luggage fees at home. You can find the fees out in advance by visiting new site Luggage Limits, which provides the latest information on more than 90 airlines.

Leave amateurs in the dust

Trust us and get to the airport an extra half-hour early. The check-in and security lines are filled with inexperienced files, and it’s a hard walking. Plus, if you decide to cut it close you may not get onto the flight at all. To reduce costs, airlines have reduced on flights and routes. The remaining flights are more likely to be oversold, especially on busy travel days. Fliers who check in early are the least likely to get bumped from oversold flights.

Take it public

The rates for renting a car at the airport have more than doubled over the past year because rental lot inventories have decreased dramatically(现住地). True, renting at the airport is convenient, but it’s just not worth it anymore. Unless you really need a car, take public transportation, hop a cab, or beg a friend to pick you up at the airport instead.

Say no to bumper cars

Tell the people picking you up to avoid parking their car. They can hang out in their car for free while waiting to get a call from you when you land. Many airports, including JFK and LAX now feature this sensible choice.

1.How does the author think of shipping gifts?

A. Unnecessary.    B. Expensive.      C. Inconvenient.    D. Wonderful.

2.Airlines have reduced flights to _________.

A. deal with crisis    B. reduce the time for leave

C. lower the cost     D. provide more job chances

3. It can be learned from the passage that ______.

A. renting a car at the airport is expensive  B. taxis stay at the airport free of charge

C. cars can park at the airport for free      D. JFK encourages people to take a taxi

4. What’s the best title for the passage?

  A. Five ways to survive a holiday flight.    B. Good seasons for flight.

  C. Cars at the airport.                   D. How to board a flight

 

 

The earth’s most rich resource—water has become one of the most precious resources in the United States as rivers, lakes, and freshwater reservoirs are increasingly exploited for human use. Consequently, using precise farming techniques to refine “irrigation scheduling” is a research area of particular interest to Susan Moran, a researcher with the US department of Agriculture. She explains that in the southwest, irrigation is both difficult and expensive. There, she says, farmers have a tendency to over irrigate, spending both more time and money than is necessary.

“I’m trying to provide new information that could be used by farmers to schedule irrigations to improve their profitability and use less water,” Moran says. “Farmers often look at weather changes and then schedule irrigation based on that information. But if they had better information, they could use scientific models to compute more precisely how much water their crop is using. ”

Rather than guessing their crop’s potential need for water based upon weather changes, farmers can use remote sensors to measure how much water their crop is actually using. This would give them a more accurate measure of how much more water it needs.

Moran believes that if farmers are getting good and timely measurements of plant and air temperature, then they can program when and how much water to give each crop through an irrigation system. No more water would be used than needed, thus saving cost and conserving water.

Moran introduces one study she conducted in Arizona to investigate the use of remote sensing data for scheduling cotton irrigations. Typically, those farmers irrigate ten times per growing season, but evidence showed that some of those farmers could achieve basically the same harvest with only nine irrigations.

“In those cases, one less irrigation saved more than all the cost of remote sensing data,” she states. “Both irrigation and satellite remote sensing data are expensive. But then again many farmers are used to wording together as a group. They are used to sharing. I’m hoping they could do the same with remote sensing data—purchase one scene over a large area to cover many farms, which would further reduce the cost. ”

46. What does Moran think is the problem with farmers?

A. Over-used reservoirs.                          B. Precision farming.

C. Irrigation researches.                           D. Over-irrigation.

47. How can farmers get the new information about their crop?

A. To reschedule irrigation as required.

B. To watch weather changes regularly.

C. To use remote sensors as researchers suggest.

D. To use scientific models since computing is more reliable.

48. What do farmers check upon when they decide how much water each crop needs?

A. Profitability.       B. Remote sensors.     C. The cost.            D. Air temperature.

49. What’s the purpose of Moran introducing the study she carried out in Arizona?

A. To investigate the use of remote sensing data.

B. To support her viewpoint in the previous paragraph.

C. To show how farmers can reap a harvest.

D. To criticize those farmers who used too much water.

50. What is among the best possible ways to help save farmers’ money?

A. Changing irrigation.                             B. Sharing sensing data.

C. Buying one computer.                          D. Extending the farms.

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