(1)+) tác dụng:Tỏ ý còn nhiều sự vật,sự việc,đối tượng tương tự chưa liệt kê hết.

+)Làm giãm nhiệp điệu câu văn chuẩn bị cho sự xuất hiện của những từ ngữ biểu thị nội dung bất ngờ hay hài hước,châm biếm.

+)Thể hiện rõ chỗ lời nói bỏ dở hay ngập ngừng,ngắt quãng.

Hòa tan 27,6 gam hỗn hợp gồm Na, Na₂O, Ba và BaO vào H₂O dư, thu được dung dịch X và b mol H₂. Sục từ từ khí CO₂ vào X, kết quả thí nghiệm được biểu diễn trên đồ thị sau:

Giá trị của b là

A. 0,10

B. 0,12

C. 0,15

D. 0,18.

Khi cho lai giữa 2 cơ thể đều chứa 2 cặp gen dị hợp (mỗi gen quy định một tính trạng, trội lặn hoàn toàn), kết quả thu được tỉ lệ kiểu hình là (1 : 2 :1) hoặc (3 : 1). Các tính trạng này đã di truyền theo quy luật

A. liên kết gen

B. hoán vị gen

C. phân li độc lập

D. tương tác gen

Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

The first question we might ask is: What can you learn in college that will help you in being an employee? The schools teach (31) ______many things of value to the future accountant, doctor or electrician. Do they also teach anything of value to the future employee? Yes, they teach the one thing that it is perhaps most valuable for the future employee to know. But very few students bother to learn it. This basic skill is the ability to organize and express ideas in writing and in speaking. This means that your success as an employee will depend on your ability to communicate with people and to (32) ______ your own thoughts and ideas to them so they will (33) ______understand what you are driving at and be persuaded.

Of course, skill in expression is not enough by itself. You must have something to say in the first place. The effectiveness of your job depends much on your ability to make other people understand your work as they do on the quality of the work itself.

Expressing one's thoughts is one skill that the school can (34) ______ teach. The foundations for skill in expression have to be laidearly: an interest in and an ear (35) ______ language; experience in organizing ideas and data, in brushing aside the irrelevant, and above all the habit of verbal expression. If you do not lay these foundations during your school years, you may never have an opportunity again.

Question 34

A. quite

B. really

C. truly

D. hardly

Các tơ đều có nguồn gốc từ xenlulozơ là

A. tơ visco và tơ axetat

B. tơ tằm và tơ visco

C. tơ tằm và tơ axetat.

D. tơ lapsan và tơ nilon – 6,6

Theo em, những hiện tượng nêu ở mục 1 có ảnh hưởng gì tới cuộc sống của người dân ?

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.

It can be shown in facts and figures that cycling is the cheapest, most convenient, and most environmentally desirable term of transport in towns, but such cold calculations do not mean much on a frosty winter morning. The real appeal of cycling is that it is so enjoyable. It has none of the difficulties and tensions of other ways of traveling so you are more cheerful after a ride, even though the rush hour.

The first thing a non-cyclist says to you is: "But isn't it terribly dangerous?" It would be foolish to deny the danger of sharing the road with motor vehicles and it must be admitted that there are an alarming number of accidents involving cyclists. However, although police records indicate that the car driver is often to blame, the answer lies with the cyclist. It is possible to ride in such a way as to reduce risks to a minimum.

If you decide to join the thousands in Britain who are now returning to cycling as a cheap, satisfying form of transport your first problem will be trying to decide what bike to buy. Here are three simple rules for buying a bike:

1. Always buy the best you can afford. Of course there has to be a meeting point between what you would really like and economic reality, but aim as high as you can and you will get the benefit not only when you ride but also if you want to sell. Well-made bikes keep the value very well. And don't forget to include in your calculations the fact that you'll begin saving money on

fares and petrol the minute you leave the shop.

2. Get the best frame, the main structure of the bicycle, for your money as you can. Cheap brakes, wheels or gears can easily be replaced by more expensive ones, but the frame sets the upper limit on any transformation. You should allow for the possibility our cycling ambitions will grow with practice. When you begin, the four miles to work may the most you ever dream of, but after a few months a Sunday ride into the country begins to look more and more desirable. The best thing is to buy a bike just a little bit better than you think you'll need, and then grow into it. Otherwise, try to get a model that can be improved.

3.The fit is vital. Handlebars and seat height can be adjusted but you must get the right sized frame. On the whole it is best to get the largest size you can manage. Frame sizes are measured in inches and the usual adult range is from 21 inches to 25 inches, though extreme sizes outside those measurements can be found. Some people say if you take four inches off from your inside leg measurement you will end up with the right size of bike. The basic principle though is that you should be able to stand with legs either side of the crossbar (the bar that goes from the handlebars to the seat) with both feet comfortably flat on the ground.

Question 44: The phrase "coliel callziantions" inparagraph 2 canbest be replacedby ________.

A. unfriendly remarks

B. poor judgments

C. unconvincing explanations

D. cruel suggestions

Tên gọi của CH₃COOC₆H₅ là

A. benzyl axetat

B. phenyl axetat

C. metyl axetat

D. etyl axetat.

Cho các phản ứng hóa học sau:

a)  S   +   O 2   → t S O 2

b)  S   +   3 F 2 → t S F 6

c)  S +   H g   →   H g S

d)  S   +   6 H N O 3 d a c → t H 2 S O 4   +   6 N O 2   +   3 H 2 O

Số phản ứng trong đó S thể hiện tính khử là

A. 2

B. 3

C. 1

D. 4

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

   The increase in international business and in foreign investment has created a need for executives with knowledge of foreign languages and skills in cross-culture communication. Americans, however, have not been well trained in either area and, consequently, have not enjoyed the same level of success in negotiation in an international arena as have their foreign counterpart.

   Negotiating is the process of communicating back and forth for the purpose of reaching an agreement. It involves persuasion and compromise, but in order to participate in either one, the negotiators must understand the ways in which people are persuaded and how compromise is reached within the culture of the negotiation.

   In many international business negotiations abroad, Americans are perceived as wealthy and impersonal. It often appears to the foreign negotiator that the American represents a large multimillion-dollar corporation that can afford to pay the price without bargaining further. The American negotiator’s role becomes that of an impersonal purveyor of information and cash, an image that succeeds only in undermining the negotiation.

   In studies of American negotiators abroad, several traits have been indentified that may serve to confirm this stereotypical perception, while subverting the negotiator's position. Two traits in particular that cause cross-culture misunderstanding are directness and impatience on the part of American negotiator. Furthermore, American negotiators often insist on realizing short-term goals. Foreign negotiators, on the other hand, may value the relationship established between negotiators and may be willing to invest time in it for long-term benefits. In order to solidify the relationship, they may opt for indirect interactions without regard for the time involved in getting to know the other negotiator.

   Clearly, perceptions and differences in values affect the outcomes of negotiations and the success of negotiators. For Americans to play a more effective role in international business negotiations, they must put forth more effort to improve cross-cultural understanding.

The word undermining in paragraph 3 is closest in meaning to .................... 

A. making known

B. making clear

C. making brief

D. making weak