1. 陨石撞击导致这种生物暴露在酸雨之下，致使young ammonite be killed off，后代随之死亡；
1. 转弯主要是靠spine, 同时，年轻的鲨鱼转弯更快；
2. 试验中，把hammerhead shark和其他类型的shark放在一个wire connected pool里面，所有的shark对于猎物的感知度一样，hammerhead shark并没有体现出更高的敏感度；
Do you agree or disagree with the following statement?
The most important thing governments should do to improve health care is to clean the environment.
Health plays a vital role in people’s life. Nothing can be compared with the significance of the health since most people accomplish nothing with a sick body, mentally and physically. Health care is increasingly concerned by both the individuals and the governments. From my perspective, cleaning the environment is a good way but not the most important way to improve health care.
It is believed that the governments make citizens healthier by improving the environment. It goes without saying that cleaning the environment indeed contributes to the improvement of the health care as the better environment people have, the less air pollution there is, and the healthier they are. But we have to admit that cleaning the environment is neither the most important nor the only way to have a better health.
One way is suggested that for the governments, building an all-rounded health care system is still quite necessary. A sophisticated health care system means that once the citizens have any problems regarding the health, governments can offer the instant and efficient assistance to the ones who need treatment. A systematic health care system guarantees the health of the inhabitants. For example, in some advanced countries like United States and Switzerland, people have no worries about their health since they know clearly that the health care systems in their nations are so reliable that they can have the regular examinations and first-class remedies whenever they need.
Another way the governments can do to improve people’s health is increasing people’s awareness of well-being. Individuals cannot live healthily if they do not truly recognize the importance of health. Thus, all the branches of the governments should take measures to help people lead a healthy lifestyle like taking exercises regularly, eating more vegetables, having less oily and fried food, etc.
To conclude, both people and the governments should focus on health care. Without people’s willingness of living healthily, governments’ actions, such as the environmental conservation, are in vain. Therefore, the best way to improve the health care is to rely on the governments and people’s mutual efforts.
Do you agree or disagree with the following statement?
Nowadays, it is not important for people to have regular family meals together?
Use specific examples to support your answer.
During my parents' time, having family meal together regularly was quite important to maintain and promote family relationship. However, nowadays it is not the only way.
Admittedly, family meals play an important role in family life in most countries. During the meals, family members can share their daily lives with each other, including difficulties at work, funny stories in schools or news all over the world. This kind of sharing cannot only help the family members understand each other more, but also provide the opportunities for them to help the one in need.
However, due to the fast pace and great work pressure in society, people are fully occupied with their work, finding it difficult for family members to be available on the same day. For example, there are four members in my family: my parents are doctors who have to be ready for work at any time, especially in an emergency, while my brother travels on business very frequently. Sometimes I even have to spend the weekends alone when they are all at work, not to mention having lunch or dinner with all of them.
Although the fast pace of society blocks the opportunities for family members to get together, it also brings other ways to promote bonding between family members. The most widely-known way is video chat. When my brother is on business trip while we want to have a family meal, he will order take-out food, video-call us, and have dinner in front of his computer screen, talking and laughing with us. Another much more convenient way is social networks, which can make us communicate with each other without time and space restrictions. When my mother traveled to France last month, she posted her favorite photos and travel-notes on social networks so that we could comment on them and interacted with other relatives and friends.
With all factors being considered, including feasibility and uniqueness, it is reasonable to believe that even though regular family meals had helped and will help us to strengthen our family relationship, it is not an irreplaceable way as some more affordable and efficient ways have been offered.
A friend of yours is trying to reduce living expenses. Which of the following will you suggest?
l Find a roommate (housemate) who can share living expenses
l Buy new technology products, such as the latest mobile phones, less frequently
l Buy less expensive food to cook at home (instead of eating in restaurants or buying expensive food items)
For those who are living in modern cities, the rising living expenses have become one of their concerns. In order to lighten financial burden, therefore, people need to sort out probable ways to cut down the cost of living, such as finding a roommate, buying technology products less frequently or cooking at home. In my opinion, choosing less expensive food to cook at home may be the most practical as well as effective solution.
Firstly, shopping for less expensive food to cook at home costs obviously much less than eating outside, since you are charged not only for the food ordered, but also for some other things, like the services and the rent in a restaurant. Considering the fact that the cost of food makes up nearly a quarter of our total living expenses, this approach is definitely recommended, especially in the long run. Sometimes, perhaps, eating outside can also cause extra expenditure on transportation as you may need to take a bus or taxi to the restaurant or cafe.
What’s more, it is widely acknowledged that cooking at home is comparatively healthy and safe, which drastically lowers the risk of suffering from certain food-related diseases such as diarrhea and sometimes even food poisoning. Hence, apart from reducing living expenses, it can avoid unnecessary medical expenses as well.
Finding a roommate who can share part of your living expenses, such as rent, on most occasions, seems to be a means of cutting down expenditure, but it may result in other financial problems, and it is also infeasible for those who are living with their family members or those who prefer to live alone. In addition, although buying technology products less frequently can save a small amount of money, it is not a long-term solution to this problem.
In conclusion, while finding someone to share the rent or saving money which would be spent on the latest technology products can be considered as probable ways of reducing living expenses, buying less expensive food to cook at home is the most practical and effective way to solve the problem.
Imagine you are a university student and you are going to choose the course for the last semester of the university study. Would you choose the course taught by the professor you have listened to or the course taught by the professor you have not?
These days, a group of students are debating on a heated issue about whether we should enroll in the courses taught by some familiar professors or not for last semester of university life. From my perspective, I would like to take classes taught by familiar professors since there are several advantages and conveniences.
Firstly, we could follow with professors’ style and accent. In the university, teachers’ teaching styles vary from each other. While some might be patient with students and welcome questions from students, others might prefer leading a class in their own path without any interruption. Different students have different tastes, so it would be easier for us to follow up with the teaching style of professor that we have listened to. Furthermore, some of us would be faced with another problem during class---the accent. If we have listened to some professors’ classes, we would get used to their accents and feel easier to follow their path. If some unfamiliar professors have different accents that are difficult to understand, it would do harm to our confidence when taking the classes.
Moreover, familiar professors often pay more attention to the students they have known. As we know, if we take classes of the professors that we have listened to, the professors would pay attention to us because they are familiar with our response and our personality. More attention from teachers would benefit us and activate our passion to do well in his/her class. For instance, during the first year in the university, I took Advanced Mathematics taught by a nice professor who would like to encourage me to overcome the obstacles. As a student who felt nervous and upset when confronting with harsh problems, I was used to his style, his personality and his positive words. In the end of the term, I still chose his Linear Algebra and he paid more attention to me than other unfamiliar students. Thanks to his care and understanding, I did well in the final test.
Admittedly, as youngsters with curiosity, we should try fresh things as much as we can, such as taking a new class in an unfamiliar field and try new professor’s style. However, as it is the last semester, we should guarantee that we pass the final courses and successfully obtain the diploma, so it would be a little risky to choose unfamiliar teachers’ courses. Furthermore, if we are interested in some other professors’ classes, we could find the specific classroom and sit aside to listen to the class.
In a nutshell, taking classes of familiar professors would be easier and more convenient for us in the end of university learning.