When you choose a freezer, remember it’s probably going to be with you for a long time . So it’s important to know which freezer is right for you needs.

First, decide if you want an upright or chest model. Uprights are more convenient. Their storage space is more accessible （可進(jìn)入的） and they take up less floor area . However, chest models are more energy-efficient because less cold air escapes when they are open .

If you’re buying an upright , you’ll have to choose between frostless （無霜）or manual , defrost （解凍）. Chest freezers are always manual . Frostless freezers automatically defrost at present intervals and remove the water . Manual models must be defrosted by hand every few months or whenever frost pile up to about a quarter of an inch.

To help your freezer reach a ripe old age , try to find a spot that’s cool , dry , and away from drafts （精棉）. Drafts and heat will raise the freezer’s cabinet temperature , which makes it work harder to keep cool . That means wasted energy and a shortened life .

Dry air is important because high humidity （濕氣） can cause the freezer to rust outside and frost up inside . With proper care , a freezer can serve you for 15 years or more . Regular cleaning and simple maintenance （保養(yǎng)） will help it maintain a zero-degree temperature and keep it smelling fresh and looking almost new .

Frostless models require less care than manual defrost freezers. The inside of a frostless unit should be washed periodically with warm water and baking soda or a mild soap , rinse , and dried .

Good habits go a long way toward a freezer that runs efficiently. To get the most from your freezer, check regularly to make sure it’s providing a true zero-degree temperature .

Keep the freezer at least three-quarters full. The emptier it gets , the more energy is wasted.  If more than three pounds of food per cubic foot of storage space is added every 24 hours, the resulting high or low temperature can damage the food .

1．Why are uprights more convenient as suggested by the passage ?

       A．Because they defrost automatically .

       B．Because they occupy less floor area .

       C．Because they always keep the right temperature .

       D．Because they can serve you for 15 years .

2．What can we learn from this passage ?

       A．It is more important to keep the freezer at the temperature of zero-degree .

       B．It is a challenging task to have your freezer serve you for 15 years or more .

       C．You don’t have to worry about defrosting if you choose a chest freezer .

       D．The opening of freezers has nothing to do with energy-saving .

3．According to the passage , choosing the best place for your freezer means         .

       A．putting it in an unheated garage if possible

       B．locating it near a sink if it is a manual-defrosted model

       C．trying to keep it away from heat , drafts , and humidity

       D．locating it as close as possible to the kitchen door

4．In order to get the best results, you should         .

       A．use cool water to wash the inside of frostless models

       B．keep the freezer at least 75% full

       C．a(chǎn)dd three pounds of food every 24 hours

       D．put your freezer in a garage with a strong floor

5．Which statement best describes the main idea of the passage ?

       A．It tells the most economical ways to use a freezer .

       B．It explains how to defrost a manual-defrosted freezer .

       C．It introduces the advantages and disadvantages of two kinds of freezers .

       D．It gives useful advice on how to choose and maintain a freezer .

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來源：1課3練單元達(dá)標(biāo)測(cè)試高二英語(yǔ)（下） 題型：014

It's the third time ________ arrived late this month.

[　　]

A．that you
B．when you
C．that you've
D．when you've

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

 It’s the third time ＿＿＿＿＿ arrived late this month.

A.that you     B.when you   C.that you’ve     D.when you’ve

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

It’s the third time ＿＿＿＿＿ arrived late this month.

A.that you     B.when you  C.that you’ve     D.when you’ve

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：閱讀理解

You are walking down the street, minding your own business when you see a snowball. No big deal, right? Except the snowball is as tall as you are. And weighs about a ton. Did we mention that it is June?

   That’s the experience thousand of Londoners had when they crossed paths with “ Snowball in Summer,” Goldsworthy makes sculpture （雕塑）from all sorts of things he finds outside – leaves, earth, and rocks, as well as ice and snow. He wanted to find out how busy people would react to an unexpected snowball melting in their midst.

   During the winter of 2008, he rolled 13 giant snowballs near his home in Scotland. He filled each one with a surprise in the center – such as berries, feathers, little stones or sheep’s wool – which would appear as the snow melted. The finished snowballs were stored in a deep freeze until summer, then transported to London in refrigerated trucks. At midnight on June 21, 2008, while the city slept, Goldsworthy and his helpers rolled their snowballs into place.

  People walking to work or school must have thought the sky was falling when they stumbled across snowballs the size of baby elephants. Some of them had never even seen snow in real life, and they couldn’t help touching them in great surprise. As the snow started to melt, things got even more interesting. The perfectly round snowballs took on different shapes as the stuff inside began to poke through. Two days later, most of Goldsworthy’s snowballs were gone, and their fillings scattered. But Londoners were left with a really good story about that odd summer day when the snowball came.

What is really special about the snowballs is that ______________________.

A. they lie in the street

B. they are in the shape of baby elephants.

C. they have berries, feathers, little stones and feathers in them.

D. they appear in June.

What was the purpose of Goldsworthy in making the snowballs?

A. To find out people’s reactions to them

B. To call up people’s memory of the cold winter.

C. To show off his skills in sculpture.

D. To let people experience the cold winter.

Why did Goldsworthy and his helpers roll their snowballs into place at mid-night?

A. They didn’t want to disturb other people.

B. It was quite at that time.

C. They wanted to avoid the traffic jam.

D, They wanted to give people a surprise.

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：閱讀理解

Thinking

Some scientists claim that we humans are the only living things that are conscious(有意識(shí)的)-we alone are aware that we are thinking.

No one knows how consciousness works –it is one of science’s last great mysteries.

All your thoughts take place in the cerebrum(大腦皮質(zhì)),which is at the top of your brain, and different kinds of thought are linked to different areas, areas, called association areas.

Each half of the cerebrum has four rounded ends called lobes(腦葉)-two at the front (frontal and temporal lobes)and two at the back (occipital and parietal lobes).

The frontal lobe is linked to your personality and it is where you have your bright ideas.

The temporal lobe is where you hear and understand what people say to you.

The occipital lobe is where you work out what your eyes see.

The parietal lobe is where you record touch, heat and cold, and pain.

The left half of the brain controls the right side of the body. The right half controls the left side.

One half of the brain is always dominant (in charge).Usually, the left brain is dominant, which is why 90% of people are right-handed.

68.Which part of your cerebrum is most active when you are making a telephone call?

A. The frontal lobe.              B. The temporal lobe.    C. The occipital lobe.            D. The parietal lobe.

69.Which of the following statements is true?

A. One’s personality has something to do with the frontal lobe.

B. Bright ideas come from the parietal lobe.

C. The occipital and temperal lobes are at the back of the cerebrum.

D. The occipital lobe is in charge of sound.

70.From the passage, we know the reason why around 10% of people are left-handed is that _______.

A.their frontal lobe is usually dominant                    B.their temporal lobe is usually dominant

C.their right brain is usually dominant                      D.their left brain is usually dominant

查看答案和解析>>

同步練習(xí)冊(cè)答案