1 . Priscilla Ouchida’s “energy efficient” house turned out to be a horrible dream. When she and her engineer husband married a few years ago, they built a $100,000 three-bedroom home in California. Tightly sealed to prevent air leaks, the house was equipped with small double-paned windows and several other energy-saving features. Problems began as soon as the couple moved in, however. Priscilla’s eyes burned. Her throat was constantly dry. She suffered from headaches and could hardly sleep. It was as though she had suddenly developed a strange illness.

Experts finally traced the cause of her illness. The level of formaldehyde gas in her kitchen was twice the maximum allowed by federal standards for chemical workers. The source of the gas? Her new kitchen cabinets and wall-to-wall carpeting.

The Ouchidas are victims of indoor air pollution, which is not given sufficient attention partly because of the nation’s drive to save energy. The problem itself isn’t new. “The indoor environment was dirty long before energy conservation came along,” says Moschandreas, a pollution scientist at Geomet Technologies in Maryland. “Energy conservation has tended to accentuate the situation in some cases.”

The problem appears to be more troublesome in newly constructed homes rather than old ones. Back in the days when energy was cheap, home builders didn’t worry much about unsealed cracks. Because of such leaks, the air in an average home was replaced by fresh outdoor air about once an hour. As a result, the pollutants generated in most households seldom built up to dangerous levels.

1. It can be learned from the passage that the Ouchidas’ house ________.

A．is well worth the money spent on its construction

B．is almost faultless from the point of energy conservation

C．failed to meet energy conservation standards

D．was designed and constructed in a scientific way

2. What made the Ouchidas’ new house a horrible dream?

A．Poor quality of the air inside.	B．Poor quality of the construction.
C．Gas leakage in the kitchen.	D．The newly painted walls.

3. The word “accentuate” (Para. 3) most probably means “________”.

A．relieve

B．accelerate

C．worsen

D．improve

4. Why were cracks in old houses not a big concern?

A．Because indoor cleanliness was not emphasized.

B．Because energy used to be inexpensive.

C．Because environmental protection was given top priority.

D．Because they were technically unavoidable.

5. This passage is most probably taken from an article entitled ________.

A．Energy Conservation	B．House Building Crisis
C．Air Pollution Indoors	D．Traps in Building Construction

2 . In the story of the three little pigs, the one who built his house of straw did not do well; the big bad wolf blew it down. But builder Michael Furbish, who made his own home from bales (捆) of straw, and an elementary school from the same material, says that in reality straw houses are not only strong, but also good for the environment. Straw — the stalks (杆, 茎) of plants like wheat, oats, and barley — is considered a waste material and is commonly used on farms as animal bedding. But more and more people are discovering that straw baled into rectangular blocks is an excellent and inexpensive building material.

There are two ways to make a straw-bale structure. You can build load-bearing walls with them, which means the walls support the roof. Or you can build a post-and-beam wooden frame that supports the roof and fill in the walls with the bales. Either way, the walls are there to stay. And they provide great insulation (绝缘), helping keep straw houses in cold climates warm in winter and those built in hot places like the desert cool in summer. Straw is considered a “green” building material because it is a renewable resource: a whole new crop can be grown and harvested every year, easily “renewing” the supply. Also, planting and harvesting straw uses relatively little energy. “Most other building materials require a lot of energy to be produced,” explains Furbish. “With straw-bale construction, you are getting a building product without using much energy at all.”

Furbish used about 900 straw bales in his family’s two-story, three-bedroom house. His company also provided straw-bale walls for the Friends Community School of College Park in Maryland. That project used about 4,000 bales. When asked if there are any problems with living in a straw house, like mice nibbling (咬, 啃) on the walls, Furbish points out that the straw is completely covered with plaster and stucco (灰泥). Besides, he has a couple of cats on mouse watch, just in case. “It would be hard to find a wall system that will wear better than straw,” he says. The big bad wolf is just out of luck.

1. The author wrote the passage in order to ________.

A．prove that the tale of the three pigs and the wolf is wrong

B．teach readers how to build straw houses

C．introduce an environmentally-friendly building material

D．advertise Furbish’s special houses

2. What do we learn about straw houses from the passage?

A．It costs little to make such special houses.

B．The outsides of the houses are green.

C．They are mostly built in the desert.

D．Plaster and stucco help make the houses strong.

3. The writer mentions the wolf at the beginning and the end of this passage to suggest ________.

A．straw houses are in fact nice and strong

B．the big bad wolf can’t blow straw houses down

C．the big bad wolf is very unlucky

D．people in straw houses needn’t worry about wolves

4. According to the passage, which of the following statements is TRUE?

A．Straw is a waste of material as animal bedding.

B．Furbish built his own home with only bales of straw.

C．Building straw houses requires no energy at all.

D．The roof of a straw house can be supported by a wooden frame.

5. We can infer from the passage that ________.

A．living in a straw house, one has to keep several cats

B．the walls of a straw house help keep heat inside in cold climates

C．it is best to build a straw house at harvest time

D．we need 900 straw bales to build one straw house