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Do you know what lungs (肺) are like (1) are in the upper part of our bodies. We have two of them. There are thousands of little pipes (管子) going through them. The (2) are like the branches of a tree and they go through every part of each lung. When we breathe in, air goes through the nose and mouth and travels down a large pipe. The other end of this pipe becomes two smaller pipes and each goes into one lung.(3) }passes through those pipes and is carried around the body.When you (4) , your upper body moves in and out. To breathe in, air rushes into your lungs. To breathe out, air is forced out of your lungs. The air we breathe goes into every part of the lungs through the branching pipes. They take it to the (5) which is moving all the time through the lungs and round to every part of our bodies. The blood goes around our body and back to the lungs in a very short time. 4()

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The Californian coastline north and south of Silicon Valley is a trend-setting sort of place. Increasingly, the home interiors of the well-heeled there tend toward one of two (1) . Houses are (2) light flooded, sparse and vaguely Asian in (3) , with perhaps a Zen fountain in one corner, a Yoga area in another. Or they resemble electronic control rooms with all sorts of (4) , computers, routers, antennae, screens and remote controls. Occasionally, both elements are (5) . "She" may have the living room and’public areas, (6) "he" is banished with his toys up or down the stairs.Currently, the gadget lovers have powerful allies. Many of the largest companies in the consumer-electronics, computer, telecoms and internet industries have made a strategic decision to (7) visions of a "digital home", "eHome", or "connected home". Doubting that (8) from corporate customers will ever (9) to the boom levels of the late 1990s, Microsoft, Intel, Sony, Verizon, Comcast, Hewlett-Packard, Apple and others see the consumer (10) their best chance for growth and will be throwing a bewildering (11) of home "solutions" at (12) in the coming months and years.To understand what the (13) ultimately have in (14) it is best to visit the (15) homes that most have built on their campuses or at trade shows. (16) cosy and often intimidating, these feature flat screens almost everywhere, (17) electronic picture frames in the bedroom from the large TV-substitute in the living room. Every (18) has a microchip and can be (19) to, typed into or clicked onto. Everything is (20) to a central computer through wireless links. 18()

A. object
B. obligation
C. objection
D. obstruction

The Californian coastline north and south of Silicon Valley is a trend-setting sort of place. Increasingly, the home interiors of the well-heeled there tend toward one of two (1) . Houses are (2) light flooded, sparse and vaguely Asian in (3) , with perhaps a Zen fountain in one corner, a Yoga area in another. Or they resemble electronic control rooms with all sorts of (4) , computers, routers, antennae, screens and remote controls. Occasionally, both elements are (5) . "She" may have the living room and’public areas, (6) "he" is banished with his toys up or down the stairs.Currently, the gadget lovers have powerful allies. Many of the largest companies in the consumer-electronics, computer, telecoms and internet industries have made a strategic decision to (7) visions of a "digital home", "eHome", or "connected home". Doubting that (8) from corporate customers will ever (9) to the boom levels of the late 1990s, Microsoft, Intel, Sony, Verizon, Comcast, Hewlett-Packard, Apple and others see the consumer (10) their best chance for growth and will be throwing a bewildering (11) of home "solutions" at (12) in the coming months and years.To understand what the (13) ultimately have in (14) it is best to visit the (15) homes that most have built on their campuses or at trade shows. (16) cosy and often intimidating, these feature flat screens almost everywhere, (17) electronic picture frames in the bedroom from the large TV-substitute in the living room. Every (18) has a microchip and can be (19) to, typed into or clicked onto. Everything is (20) to a central computer through wireless links. 16()

A. Ultimately
B. Typically
C. Fortunately
D. Rarely

In the past hundred years a million people have died in earthquakes, another million have been killed by (36) and tornadoes and 9 million have lost their lives in floods. In addition to this many millions more have died as a result of famine and disease. We should also not forget in many of the world’s countries (37) , chronic water shortage, is a fact of life, especially in the African Sahel region (38) the Sahara desert. Scientists and engineers around the world have made great advances in earthquake engineering. It is, of course, (39) physically to move cities such as Tokyo and San Francisco that have been built in earthquake (40) . But most often it is not the earthquake that (41) people, it is the (42) buildings, bridges and other structures that cause deaths, and the (43) of that happening can be greatly reduced by better building programs. (44) . (45) we have catapulted (弹射) hundreds of species of plants and animals into extinction, at the same time possibly wrecking our own long-term prospects for survival. (46) . In the past hundred years a million people have died in earthquakes, another million have been killed by (36) and tornadoes and 9 million have lost their lives in floods. In addition to this many millions more have died as a result of famine and disease. We should also not forget in many of the world’s countries (37) , chronic water shortage, is a fact of life, especially in the African Sahel region (38) the Sahara desert. Scientists and engineers around the world have made great advances in earthquake engineering. It is, of course, (39) physically to move cities such as Tokyo and San Francisco that have been built in earthquake (40) . But most often it is not the earthquake that (41) people, it is the (42) buildings, bridges and other structures that cause deaths, and the (43) of that happening can be greatly reduced by better building programs. (44) . (45) we have catapulted (弹射) hundreds of species of plants and animals into extinction, at the same time possibly wrecking our own long-term prospects for survival. (46) .

When you want to call a store or an office that you don’t call often, you look the number up in the telephone book. You dial the number, and then you forget it! You use short-term memory to remember the number. Your short-term memory lasts about 30 seconds. However, you don’t need to look it up in the telephone book if it is your best friend’s number. This information is in your long-term memory. Your long-term memory has everything that you remember through the years.When you call a store or an office that don’t call often, you (1) the number in the (2) . You dial the number, and then you forget it! According to the passage you forget the telephone number that you don’t call often because you use your (3) }to remember it. A person’s ort-term memory lasts about (4) . However you needn’t look up your best friend’s number because it is in your (5) . 2()

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