Viết các số hoặc biểu thức dưới dấu căn thành dạng tích rồi đưa thừa số ra ngoài dấu căn. - 0 , 05 28800

Quan sát hai sơ đồ ở hình 28.2a, b. Hãy trả lời các câu hỏi sau:

- Sơ đồ 28.2a giống và khác sơ đồ 28.2b ở điểm nào?

- Tại sao trẻ sinh đôi cùng trứng đều là nam hoặc đều là nữ?

- Đồng sinh khác trứng là gì? Những đứa trẻ đồng sinh khác trứng có thể khác nhau về giới tính hay không? Tại sao?

- Đồng sinh cùng trứng và khác trứng khác nhau cơ bản ở điểm nào?

câu hỏi tương tự nha bạn.

Trong cơ chế duy trì nồng độ glucôzơ máu, bộ phận thực hiện là

A. tế bào tụy

B. gan

C. tim

D. thận

Read the following passage and mark the letter A, B, C, or 0 on your answer sheet to indicate the correct answer to each of the questions from 28 to 34.

  Telecommuting is some form of computer communication between employees’ homes and offices. For employees whose job involve sitting at a terminal or word processor entering data or typing reports, the location of the computer is of no consequence. If the machine can communicate over telephone lines, when the work is completed, employees can dial the office computer and transmit the material to their employers. A recent survey in USA Today estimates that there are approximately 8,7 million telecommuters. But although the numbers are rising annually, the trend does not appear to be as significant as predicted when Business Week published “The Portable Executive” as its cover story a few years ago. Why hasn’t telecommuting become more popular?

  Clearly, change simply takes time. But in addition, there has been active resistance on the part of many managers. These executives claim that supervising the telecommuters in a large work force scattered across the country would be too difficult, or, at least, systems for managing them are not yet developed, thereby complicating the manager’s responsibilities.

  It is also true that employees who are given the option of telecommuting are reluctant to accept the opportunity. Most people feel that they need regular interaction with a group, and many are concerned that they will not have the same consideration for advancement if they are not more visible in the office setting. Some people feel that even when a space in their homes is set aside as a work area, they never really get away from the office.

How many Americans are involved in telecommuting?

A. More than predicted in Business Week.

B. More than 8 million.

C. Fewer than last year. 

D. Fewer than estimated in USA Today.

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 28 to 34.

A letter of application is a sales letter in which you are both salesperson and product, for the purpose of an application is to attract an employer’s attention and persuade him or her to grant you an interview. To do this, the letter presents what you can offer the employer, rather than what you want from the job.

Like a resume, the letter of application is a sample of your work and an opportunity to demonstrate your skills and personality. If it is written with flair and understanding and prepared with prefessional care, it is likely to be very effective. While the resume must be factual, objective, and brief, the letter is your chance to interpret and expand. It should state explicitly how your background relates to the specific job, and it should emphasise your strongest and most relevant characteristics. The letter should demonstrate that you know both yourself and the company.

The letter of application must communicate your ambition and enthusiasm. Yet it must be modest. It should be neither aggressive nor compliant: neither pat yourself on the back nor ask for sympathy. It should never express dissatisfaction with the present or former job or employer. And you should avoid discussing your reasons for leaving your last job.

Finally, it is best that you not broach the subject on salary. Indeed, even if a job advertisement requires that you mention your salary requirements, it is advisable simply to call them “negotiable.” However, when you go on an interview, you should be prepared to mention a salary range. For this reason, you should investigate both your field and, if possible, the particular company. You don’t want to ask for less than you deserve or more than is reasonable.

(Adapted from “Select Readings – Intermediate” by Linda Lee and Erik Gundersen)

The word “explicitly” in paragraph 2 is closest in meaning to _______.

A. clearly

B. slightly

C. quickly

D. shortly

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

We put his success _________his efforts.

A. up to

B. down to

C. off at

D. up with

Quá trình phản nitrat diễn ra thuận lợi trong điều kiện nào dưới đây?

A. Môi trường hiếu khí                                                               

B. pH thấp

C. độ ẩm không khí bão hòa                       

D. nhiệt độ cực thấp