1 . We may think we're a culture that gets rid of our worn technology at the first sight of something shiny and new, but a new study shows that we keep using our old devices(装置) well after they go out of style. That’s bad news for the environment — and our wallets — as these outdated devices consume much more energy than the newer ones that do the same things.

To figure out how much power these devices are using, Callie Babbitt and her colleagues at the Rochester Institute of Technology in New York tracked the environmental costs for each product throughout its life — from when its minerals are mined to when we stop using the device. This method provided a readout for how home energy use has evolved since the early 1990s. Devices were grouped by generation — Desktop computers, basic mobile phones, and box-set TVs defined 1992. Digital cameras arrived on the scene in 1997. And MP3 players, smart phones, and LCD TVs entered homes in 2002, before tablets and e-readers showed up in 2007.

As we accumulated more devices, however, we didn't throw out our old ones. "The living-room television is replaced and gets planted in the kids' room, and suddenly one day, you have a TV in every room of the house," said one researcher. The average number of electronic devices rose from four per household in 1992 to 13 in 2007. We're not just keeping these old devices — we continue to use them. According to the analysis of Babbitt's team, old desktop monitors and box TVs with cathode ray tubes are the worst devices with their energy consumption and contribution to greenhouse gas emissions（排放）more than doubling during the 1992 to 2007 window.

So what's the solution（解决方案）? The team's data only went up to 2007, but the researchers also explored what would happen if consumers replaced old products with new electronics that serve more than one function, such as a tablet for word processing and TV viewing. They found that more on-demand entertainment viewing on tablets instead of TVs and desktop computers could cut energy consumption by 44%.

1. What does the author think of new devices?

A．They are environment-friendly.	B．They are no better than the old.
C．They cost more to use at home.	D．They go out of style quickly.

2. Why did Babbitt's team conduct the research?

A．To reduce the cost of minerals.

B．To test the life cycle of a product.

C．To update consumers on new technology.

D．To find out electricity consumption of the devices.

3. Which of the following uses the least energy?

A．The box-set TV.	B．The tablet.
C．The LCD TV.	D．The desktop computer.

4. What does the text suggest people do about old electronic devices?

A．Stop using them.	B．Take them apart.
C．Upgrade them.	D．Recycle them.

2 . Sales director is a position ________ communication ability is as important as sales skills.

A．which

B．that

C．when

D．where

3 . The basketball coach, as well as his team, ________ interviewed shortly after the match for their outstanding performance.

A．were	B．was
C．is	D．are

4 . ______in painting, John didn’t notice evening approaching.

A．To absorb	B．To be absorbed
C．Absorbed	D．Absorbing

5 . Then, handle the most important tasks first, so you’ll feel a real sense of ________ （achieve）. （所给词的适当形式填空）

6 . It suddenly occurred to him ________ he had left his keys in the office.

A．whether	B．where
C．which	D．that

7 . (2015·天津) __________ for two days, Steve managed to finish his report on schedule.

A．To work	B．Worked
C．To be working	D．Having worked

8 . Bach died in 1750, but it was not until the early 19th century____ his musical gift was fully recognized.

A．while

B．though

C．that

D．after

9 . Endangered polar bears are breeding (繁殖) with grizzly bears (灰熊), creating “pizzly” bears, which is being driven by climate change, scientists say.

As the world warms and Arctic sea ice thins, starving polar bears are being forced ever further south, where they meet grizzlies, whose ranges are expanding northwards. And with that growing contact between the two come increasing hybrids (杂交种).

With characteristics that could give the hybrids an advantage in warming northern habitats, some scientists guess that they could be here to stay. “Usually, hybrids aren’t better suited to their environments than their parents, but these hybrids are able to search for a broader range of food sources,” Larisa DeSantis, an associate professor of biological sciences at Vanderbilt University, told Live Science.

The rise of “pizzly” bears appears with polar bears’ decline: their numbers are estimated to decrease by more than 30% in the next 30 years. This sudden fall is linked partly to “pizzly” bears taking up polar bears’ ranges, where they outcompete them, but also to polar bears’ highly specialized diets.

“Polar bears mainly consumed soft foods even during the Medieval Warm Period, a previous period of rapid warming,” DeSantis said, referring to fat meals such as seals. “Although all of these starving polar bears are trying to find alternative food sources, like seabird eggs, it could be a tipping point for their survival.” Actually, the calories they gain from these sources do not balance out those they burn from searching for them. This could result in a habitat ready for the hybrids to move in and take over, leading to a loss in biodiversity if polar bears are replaced.

“We’re having massive impacts with climate change on species,” DeSantis said. “The polar bear is telling us how bad things are. In some sense, “pizzly” bears could be a sad but necessary compromise given current warming trends.”

1. Why do polar bears move further south?

A．To create hybrids.	B．To expand territory.
C．To relieve hunger.	D．To contact grizzlies.

2. What makes “pizzly” bears adapt to natural surroundings better than their parents?

A．Broader habitats.	B．More food options.
C．Climate preference.	D．Improved breeding ability.

3. What does the underlined phrase “a tipping point” in paragraph 5 refer to?

A．A rare chance.	B．A critical stage.
C．A positive factor.	D．A constant change.

4. What’s the main idea of the text?

A．Polar bears are changing diets for climate change.

B．Polar bears have already adjusted to climate change.

C．“Pizzly” bears are on the rise because of global warming.

D．“Pizzly”bears have replaced polar bears for global warming.

10 .       more learned a man is,       more modest be usually become.

A．The ; the

B．A; a

C．The ; a

D．A; the