Although we can’t compete in terms of size, I _____ believe we hold an advantage in te

A. although

B.but

C.because

D.for

ms of dedication to customer service.

A: Therefore

B; But

C; Although

We can safely conclude from the text that ______.

A．vertebrates feel pain because they have vertebrae

B．animals do not experience pain although they are equipped with all the necessary neurological structures

C．animals do not feel pain because they haven't developed fore-brains yet

D．none of the above

Although April did not bring the rains we all hoped for, and although the Central Valley doesn’t generally experience the atmospheric (大气的) sound and lightning that can accompany those rains, it is still important for parents to be able to answer the youthful questions about thunder and lightning.

The reason that these that these two wonders of nature are so difficult for many adults to explain to children is that they are not very well understood by adults themselves. For example, did you know that the lighting we see flashing(闪烁) down to the earth from a cloud is actually flashing up to a cloud from the earth？ Our eyes cheat us into thinking we see a downward motion when it’s actually the other way round. But then, if we believe only what we think we see, we’d still insist that the sun rises in the morning and sets at night.

Most lightning flashes take place inside a cloud, and only a relative few can be seen jumping between two clouds or between the earth and a cloud. But, with about 2,000 thunderstorms taking place above the earth every minute of the day and night, there’s enough activity to produce about 100 lightning strikes on the earth every second.

Parents can use thunder and lightning to help their children learn more about the world around them. When children understand that the light of the lightning flashes reaches their eyes almost at the same moment, but the sound of the thunder takes about 5 seconds to travel just one mile, they can begin to time the interval between the flash and the crash to learn how close they are to the actual spark.

26. According to the first paragraph, in the Central Valley area, rains come _____.

A. when it is April

B. when the field is dry

C. when people all hope for it

D. usually without thunder and lighting

27. We tend to think that lighting moves downward because_____.

A. our eyes play a joke on us

B. we take it to be true scientifically

C. we cannot see it clearly most of the time

D. it always runs down from a cloud to the earth

28. Which of the following is NOT true about lighting according to the passage？

A. Most lightning flashes take place inside a cloud.

B. About 2,000 thunderstorms occur above the earth every minute.

C. People can seldom see lightning flashes running between two clouds or between the earth and a cloud.

D. The thunderstorms happening above the earth can provide enough power to produce about 100 lightning strikes every second.

29. What does the word “ spark” in the last paragraph probably refer to ？

A. Cloud

B. Rain

C. Thunderstorm

D. Lightning flash

30. What does the passage imply？

A. Seeing is believing.

B. We should never trust what we see or hear.

C. People may easily make mistakes in their understanding of nature.

D. Children sometimes know more about nature than their parents do.

A: Very well, we have settled everything about this transaction, except the terms of payment.

B: As you know, we prefer the L/C 20 days in advance which expires 15 days after receiving the paking list.

A: I suppose you have known our financial standing and credit well now after our long-term cooperation．We know an irrevocable L/C can ensure that the seller gets payment duly．But, on the other hand, it would increase the buying cost．Therefore, could you consider giving us D/P this time？

B: I am sorry．But our rules only allow us to accept other terms of payment by L/C, although the buyer has had two or three transactions with us before.

A: But why not if you have known the buyer's credit after several deals？

B: We hope you can understand．We have got some serious lessons from the credulity．One of them was through D/P documentary collection．When the shipment worth US ＄50000 was effected, the buyer refused to make the payment．But we can do nothing with it．And that buyer had had one or two deals before this one.

A: I see．But the flexible terms of payment will definitely bring you more orders as well as facilitate the buyers' purchasing.

B: Sure．We don't mean we won't accept other terms of payment forever．As a matter of fact, we will do so when we have known well about the buyer's credit after a real long-term cooperation.

A.As if

B.Although

C.Given

D.Because

pain.

To avoid the pain of a drilling that may last perhaps a minute or two, we demand the "needle"— a shot of novocaine (奴佛卡因) -that deadens the nerves around the tooth.

Now it' s true that the human body has developed its millions of nerves to be highly aware of what goes on both inside and outside of it. This helps us adjust to the world. Without our nerves—and our brain, which is a bundle of nerves— we wouldn't know what's happening. But we pay for our sensitivity. We can feel pain when the slightest thing is wrong with any part of our body. The history of torture is based on the human body being open to pain.

But there is a way to handle pain. Look at the Indian fakir(行僧) who sits on a bed of nails. Fakirs can put a needle right through an arm, and feel no pain; This ability that some humans have developed to handle pain should give us ideas about how the mind can deal with pain.

The big thing in withstanding pain is our attitude toward it. If the dentist says, "This will hurt a little, it helps us to accept the pain. By staying relaxed,' and by treating the pain as an interesting sensation, we' can handle the pain without falling apart. After all; although pain is an unpleasant sensation, it is still a sensation, and sensations are the stuff of life.

26. The passage is mainly about______.

A) how to stiffer pain

B) how to avoid pain

C) how to handle pain

D) how to stop pain

rent. For most humans, seeing is believing, although we do occasionally brood about whether we can believe our eyes. The other senses are largely ancillary; most of us do not know how we might go about either doubting or believing our noses. But for dogs, scenting is believing. A dog's nose is to ours as the wrinkled surface of our complex brain is to the surface of an egg. A dog who did comparative psychology might easily worry about our consciousness or lack thereof, just as we worry about the consciousness of a squid.

We who take sight for granted can draw pictures of scent, but we have no language for doing it the other way about, no way to represent something visually familiar by means of actual scent. Most humans cannot know, with their limited noses, what they can imagine about being deaf, blind, mute, or paralyzed. The sighted can, for example, speak if a blind person a "in the darkness," but there is no corollary expression for what it is that we are in relationship to scent. If we tried to coin words, we might come up with something like "scent-blind." But what would it mean？ It couldn't have the sort of meaning that "color-blind" and "tone-deaf' do, because most of us have experienced what "tone" and "color" mean in those expressions "scent-blind." Scent for many of us can be only a theoretical, technical expression that we use because our grammar requires that we have a noun to go in the sentences we are prompted to utter about animals' tracking. We don't have a sense of scent. What we do have is a sense of smell-for Thanksgiving dinner and skunks and a number of things we call chemicals.

So if Fido and sitting on the terrace, admiring the view, we inhabit worlds with radically different principles of phenomenology. Say that the wind is to our backs. Our world lies all before us, within a 180 degree angle. The dog's-well, we don't know, do we？

He sees roughly the same things that I see but he believes the scents of the garden behind us. He marks the path of the black-and-white cat as she moves among the roses in search of the bits of chicken sandwich I let fall as I walked from the house to our picnic spot. T can show that Fido is alert to the kitty, but not how, for my picture-making modes of thought too easily supply falsifyingly literal representations of the cat and the garden and their modes of being hidden from or revealed to me.

The phrase "other senses are largely ancillary" (paragraph 1) is used by the author to suggest that______.

A．only those events experienced directly can be appreciated by the senses

B．for many human beings the senses of sights is the primary means of knowing about the world

C．smell is in many respects a more powerful sense than sight

D．people rely on at least one of their other senses in order to confirm what they see

________we understand what Jet Lag is, we can go some way to overcome it.

A、 Since that

B、 Despite

C、 Although

D、 Now that

A.much

B.much more

C.much of

D.rather than