e等公務園+學習平臺題庫解答

According to the audio file about bulrushes, why do they cut the rushes above the root?

1. It can prevent them from dying completely.
2. It is easier to cut from the upper part.
3. The upper part is more suitable for making blankets.
4. The upper and bottom parts are suitable for different products.

Bulrushes are relatives of bamboo and grass can reach two and half meters in a year. Found throughout the world's waterways, they are perfect for turning into mats and baskets.

After watching the video, Betty is sorting out relevant information. However, she cannot recall this part. Please help her fill in the blank.

The rushes are green, but the bulrush mats are golden. The answer is four days of sunbathing. Anna turns them two or three times a day, so the air gets through to them and the drying process is even and you can_____ that they're drying quite nicely.

1. hear by the sound
2. look by the color
3. touch by the hardness
4. smell by the flavor

After watching the video about charcoal, which of the following statements is NOT the reason why they describe the briquettes as cakes ?

1. They describe the briquettes as cakes because the size is similar.
2. They describe the briquettes as cakes because the production process is similar.
3. They describe the briquettes as cakes because the color is similar.
4. They describe the briquettes as cakes because some raw materials are similar.

According to the audio file about bulrushes, why does Anna ask clients to spray carpets every four to six weeks ?

1. to keep them moist
2. to keep them lithe
3. to increase their service life
4. to prevent mildew

The process they use is called pyrolysis. It involves vaporizing all the other compounds in the wood, leaving only pure carbon. To turn these massive piles of timber into charcoal, they first stack the wood in one of 28 purpose-built kilns. But if you just set fire to this lot, you'd end up with a pile of ash, not charcoal. If we didn't control the airflow we would end up with ash. To stop the log pile from becoming a towering inferno, they restrict the flow of oxygen with a series of air vents. There are holes at the base to bring in clean air which is essential for the burning of charcoal.

According to the audio file about charcoal, why does the narrator say ”there's a risk it could spontaneously burst into flames”?

1. The reason is that the temperature of the charcoal is too low.
2. The reason is that there are still toxic substances that have not evaporated yet.
3. The reason is that charcoal is not stable after kiln unpacking.
4. The reason is that the charcoal lacks moisture.

After a healthy dose of sun, the bulrushes are now too rigid for weaving.

The word “rigid” in this sentence is not close in meaning to…

1. solid
2. inflexible
3. stiff
4. stern

According to the video about charcoal, which description is not mentioned?

1. It gives off three times as much heat as wood.
2. People have been using it to sizzle our steaks for over 4,000 years.
3. The way people make it has totally changed.
4. Europeans alone get through 800,000 tons of charcoal a year.

According to the video about charcoal, which step is NOT required to make charcoal ?

1. smolder
2. cool down
3. evaporate
4. dry