题目内容
（请给出正确答案）
--- A:Could we make a tentative appointment for, say, this Saturday？
---B:
A、Yes, you can.
B、That’s fine for me.
C、Sorry, I don’t know. I am new here.
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更多“－－－ A:Could we make a tentativ…”相关的问题
A.Sorry, I don’t know.
B.Yes, you can.
C.That’s fine for me.
The power of words, then lies in their association with the things they bring up before our minds. Words became filled with meanings for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something to us increase.
Great writers are those who not only have great thoughts but also express these thoughts in words that appeal powerfully to our minds and emotions. We should therefore learn to choose our words carefully and use them exactly, or they will make our speech silly and impolite.
The origin of language is ______.
A．clearly explained in this passage
B．a matter that can not be or has not been explained or understood
C．a question that was difficult to answer
D．a problem already solved
Human Heart Can Make New Ceils
Solving a longstanding (为时甚久的) mystery, scientists have found that the human heart continues to generate new cardiac (心脏的) cells throughout the life span, although the rate of new cell production slows with age.
The finding, published in the April 3 issue of Science, could open a new path for the treatment of heart diseases such as heart failure and heart attack, experts say.
"We find that the beating cells in the heart, cardiomyocytes (心肌细胞), are renewed," said lead researcher Dr. Jonas Frisen, a professor of stem cell research at the Karolinska Institute in Stockholm, Sweden. "It has previously not been known whether we were limited to the cardiomyocytes we are born with or if they could be renewed," he said.
The process of renewing these cells changes over time, Frisen added. In a 20-year-old, about 1 percent of cardiomyocytes are exchanged each year, but the turnover (更替) rate decreases with age to only 0.45 percent by age 75.
"If we can understand how the generation of new cardiomyocytes is regulated, it may be potentially possible to develop pharmaceuticals (药物) that promote this process to stimulate regeneration after, for example, a heart attack," Frisen said.
That could lead to treatment that helps restore damaged hearts.
"A lot of people suffer from chronic heart failure," noted co-author Dr. Ratan Bhardwaj, also from the Karolinska Institute. "Chronic heart failure arises from heart cells dying," he said.
With this finding, scientists are "opening the door to potential therapies (疗法) to having ourselves heal ourselves," Bhardwaj said. "Maybe one could devise a pharmaceutical agent that would make heart cells make new and more cells to overcome the problem they are facing. "
But barriers remain. According to Bhardwaj, scientists do not yet know how to increase heart cell production to a rate that would replace cells faster than they are dying off, especially in older patients with heart failure. In addition, the number of new cells the heart produces was estimated using healthy hearts -- whether the rate of cell turnover in diseased hearts is the same remains unknown.
The human heart stops producing cardiac cells
A．when a person becomes old.
B．as soon as a person gets sick.
C．immediately after a person is born.
D．once a person dies.
Barbara calls Mr. Smith to make an appointment.
Barbara: Hello, Mr. Smith. This is Barbara, the sales()of Audi. We met at the car exhibition last Friday.
Mr. Smith: Oh, yes. I was just going to call you. I really like that car you recommended and I am thinking of buying it.
Barbara: Good choice. Why don't you come to our store and we can work out the()of purchase？ What time will be convenient for you？
Mr. Smith: I'll be out of town tomorrow, but almost any time after that would be fine with me.
Barbara: Well, could we make a tentative()for, say, this Saturday？
Mr. Smith: That's fine for me. Can you tell me your store's()and opening hours？
Barbara: It's near the Workers' Stadium. And we are open from 9 a.m. to 5 p.m.
Mr. Smith: Then, I'll come to your store around 10 o'clock.
Barbara: OK. I will wait for you in the store. And don't forget to bring your driver's().
Mr. Smith: OK, see you then.
The power of words, then, lies in their combinations--the things they bring up before our minds. Words become filled with meaning for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something to us increases.
Great writers are those who not only have great thoughts, but also express these thoughts in words which appeal powerfully to our minds and feelings. This charming and telling use of words is what we call literary (文字的) style. Above alt, the real poet is a master of words. He can convey his meaning in words which sing like music, and which by their position and association can move men to tears. We should therefore learn to choose our words carefully and use them accurately, or they will make our speech silly and rude.
The origin of language ______.
A．is reflected in. sounds and letters
B．is handed down from generation to generation
C．dates back to the prehistoric period
D．is a problem not yet solved
：A、They are used to express feelings only
B、They can not be written down
C、They are simply sounds
D、They are mysterious.
Suppose a man wanted to reach a distant star. Even if he traveled his whole life, he would have to move faster than the speed of the light. Nothing can move that fast except light itself.
Strange things happen to an object when it moves rapidly. The object weighs more. An object moving at 86 percent of the speed of light is twice as heavy as it is at rest. A stick appears shorter. A clock runs more slowly. A man would not age so fast as he would on the earth.
Light travels more than 186,000 miles a second, or about 11 million miles a minute. In one year, light travels six trillion miles. That great distance is called a light-year. It is used to measure distance in space.
The star closest to our sun is Alpha Centauri. It is more than four light-years away. If one traveled at the speed of light, he could make a round trip to Alpha Centauri in nine years. But, even at that speed, he could not reach Alcaid (北斗星) in the handle of the Big Dipper. A one-way journey to Alcaid would take almost 200 years
1．In this passage the words “closest to our sun” means the star（）.
A、the earth we live on
B、Alpha Centauri
C、the Big Dipper
D、the moon
2．A one-way journey to Alcaid would take（）.
A、about nine years
B、less than four years
C、almost 200 years
D、less than 100 years
3．Why do we measure the distance in light-years instead of miles?（）
A、Units of light-years sound better.
B、Using light- years reduced the number of figures used.
C、We used to measure distance in light-years long ago.
D、We do not make mistakes when we use light-years.
4．If a stone moved at the speed of light, it（）.
A、would weigh twice more than it is motionless
B、would weigh as much as it is on earth
C、would weigh less than it is on earth
D、would not have weight at all
5．This story is mainly about （）.
A、the distance between the sun and the other stars
B、the problems of traveling to faraway stars
C、what happens when we travel faster than the speed of light
D、the tool we use when we go to faraway stars
Passage 2 Questions 6 to 10 are based on the following passage:
How men first learned to invent words is unknown; in other words, the origin of language is a mystery. All we really know is that men, unlike animals, somehow invented certain sounds to express thoughts and feelings, actions and things, so that they could communicate with each other; and that later they agreed upon certain signs, called letters, which could be combined to represent those sounds, and which could be written down. Those sounds, whether spoken, or written in letters we call words.
The power of words, then, lies in their combinations — the things they bring up before our minds. Words become filled with meaning for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something to us increases.
Great writers are those who not only have great thoughts but also express these thoughts in words which appeal powerfully to our minds and feelings. This charming and telling use of words is what we call literary (文字的) style. Above all, the real poet is a master of words. He can convey his meaning in words which sing like music, and which by their position and association can move men to tears. We should therefore learn to choose our words carefully and use them accurately, or they will make our speech silly and rude.
第6题：The origin of language ________.
A. is reflected in sounds and letters B. is handed down from generation to generation C. dates back to the prehistoric period D. is a problem not yet solved
【M1】
M: Well, everyone has been talking about having a barbecue down by the river, so why don't you pick up some hamburger and hot dogs？
W: Okay, but how much hamburger are we going to need？ And hot dogs too？
M: Uh, I don't know. How about three pounds of hamburger and a couple packages of hot dogs？
W: Oh, that's not going to be enough. Do you remember the last picnic we went on？ Your roommate, Jim, ate about ten hamburgers by himself!
M: You're right. Let's see. I'd better write this down. Uh, let's see about nine pounds of hamburger meat and, uh .... seven packages of hot dogs.
W: And you'd better pick up some chicken for those who don't like hamburger or hot dogs.
M: Okay. How about five or six bags of potato chips？
W: Humm. Better make that eight or so.
M: All right. Oh, and we're gonna need some hamburger and hot dog buns, How about five packages a piece？ I think that sounds about right.
W: Yeah, you'd better pick up some mustard, catchup, and mayonnaise too.
M: Okay. What else？ Uh, we're gonna need some soft drinks. How about ten of those big 2-liter bottles？
W: Sounds fine, but be sure to buy a variety of drinks.
M: Okay. And what about dessert？
W: Well, maybe we could ask Kathy to make a few cherry pies like she did last time.
M: Well, I heard that she's been very busy working two jobs, so we'd better not ask her, uh... Hey, why don't you whip up some of your oatmeal cookies？ Hey, you could even ask, uh... what's her name.., yeah that new girl, Susan, the one that moved in across the street! I bet she'd be willing to help you !
W: Nah, I don't think I could ask her, I haven't got a phone number. Anyway, I can try myself.
(20)
A．At a park.
B．At the beach.
C．At Dave's house.
D．By a river.
