It is bad to have food stuck between your teeth for long periods of time. This is because food attracts germs; germs produce acid, and acid hurts your teeth and gums. Flossing helps to remove the food that gets stuck between your teeth. This explains why flossing helps to keep your mouth healthy, but some doctors say that flossing can also be good for your heart. It may seem strange that something you do for your teeth can have any effect on your heart. Doctors have come up with a few ideas about how flossing works to keep your heart healthy. One idea is that the germs that hurt your teeth can leave the mouth and travel into your blood.Germs that get into the blood can then attack your heart. Another idea is based on the fact that when there are too many germs in your mouth, the body tries to fight against there germs. For some reason, the way the body fights these mouth germs may end up weakening the heart overtime. _ . Some doctors think that the link between good flossing habits and good heart health is only a coincidence. The incidence of two or more events is completely random, as they do not admit of any reliable cause and effect relationship between them. For example, every time I wash my car, it rains. This does not mean that when I wash my car, I somehow change the weather. This is only a coincidence. Similarly, some doctors think that people who have bad flossing habits just happen to also have heart problems, and people who have good flossing habits just happen to have healthy hearts. The theory that flossing your teeth helps to keep your heart healthy might not be true. But every doctor agrees that flossing is a great way to keep your teeth healthy. So even if flossing does not help your heart, it is true to help your teeth. This is enough of a reason for everyone to floss their teeth every day. Which is the best title for the passage? A) Flossing by Coincidence B) How to Keep Your Teeth Healthy C) Flossing Habits and Healthy Hearts D) Why Doctors Disagree About Flossing
C
Banks are not ordinarily prepared to pay out all accounts(,); they rely on depositors not to demand payment all at the same time. If depositors should come to fear that a bank is not safe, that it cannot pay off all its depositors, then that fear might cause all the depositors to appear on the same day. If they did, the bank could not pay all accounts. However, if they did not all appear at once, then there would always be enough money to pay those who wanted their money when they wanted it. Mrs. Elsie Vaught has told us of a terrifying bank run that she experienced. One day in December of 1925 several banks failed to open in a city where Mrs. Vaught lived. The other banks expected a run the next day, and so the officers of the bank in which Mrs Vaught worked as a teller had enough money on hand to pay off their depositors. The officers simply told the tellers to pay on demand. The next morning a crowd gathered in the bank and on the sidewalk outside. The length of the line made many think that the bank could not possibly pay off everyone. People began to push and then to fight for places near the tellers' windows. The power of the panic atmosphere was such that two tellers, though they knew that the bank was quite all right and could pay all depositors, drew their own money from the bank. Mrs Vaught says that she had difficulty keeping herself from doing the same. According to the passage, the actions of the depositors of Mrs. Vaught's bank were affected mainly by the _ . A) ease with which they could get their money B) confidence that Mrs. Vaught showed C) confidence shown by other depositors of the bank D) failure of several other banks to open
D
Q: Play is the basic business of childhood, and more and more in recent years research has shown the great importance of play in the development of a human being.From earliest infancy , every child needs opportunity and the right material for play, and the main tools of play are toys.The main function of toys is to suggest, encourage and assist play.To succeed in this, they must be good toys, which children will play with often, and will come back to again and again.Therefore, it is important to choose suitable toys for different stages of a child's development. In recent years research on infant development has shown that the standard a child is likely to reach, within the range of his inherited abilities, is largely determined in the first three years of his life.So a baby's ability to benefit from the right play materials should not be underestimated.A baby who is encouraged, talked to and shown things and played with, has the best chance of growing up successfully. The next stage, from three to five years old, curiosity knows no bounds.Every type of suitable toy should be made available to the child, for trying out, experimenting and learning, for discovering his own particular ability. Bricks and jigsaws and construction toys; painting, scribbling and making things; sand and water play; toys for imaginative and pretending play; the first social games for learning to play and get on with others. By the third stage of play development--from five to seven or eight years old-- the child is at school.But for a few more years play is still the best way of learning, at home or at school.It is easier to see which type of toys the child most enjoys. Until the age of seven or eight, play and work mean much the same to a child.But once reading has been mastered, then books and school become the main source of learning.Toys are still interesting and valuable, which lead up to new hobbies, but their significance has changed --to a child of nine or ten years old, toys and games mean, as to adults, relaxation and fun. 63. The article is about _ . A) the importance of play B) the importance of books C) the relationship between play and work D) children's speech development
A: A
(Q).
My parents have always raised me to be very money-conscious, so I guess, in that sense, they are rather untraditional. Since I was a little girl, if I ever wanted to purchase anything, my parents would sternly remind me of the value of every cent, prompting me to spend my pocket money only when necessary. My mom actually came up with a system that we strictly abide by in regards to money-spending. She gives me a certain amount of allowance every month, and whenever I buy anything with my accumulated money, I keep track of my receipts and record it in a little notebook, essentially a tiny version of my mom's own accounting booklet. Being in control of my own money has really taught me to be careful in how I spend my money, giving me a sense of responsibility and ownership over it. As for earning money, aside from my allowance, my parents never really encouraged me to go out and find a job at typical American occupation locales , such as restaurants or clothing stores. Instead, they would prefer that I spend my time focusing on my schoolwork, which I guess is where my parents become more traditional. Yet I still earn money here and there in little jobs, such as teaching students at my school, and of course, writing for the paper. Though I have several friends already working, I am pretty happy with my current situation. I am able to focus on my studies, all the while earning quite a bit of money, and also learning monetary skills that are _ to survival in the real world, and for that I am grateful. We can know that the author from the passage _ . A) loves a little notebook B) likes spending money C) needs working at restaurants D) satisfies the current situation
(A).
D