Cho đường tròn \(\left( C \right)\) có tâm \(I\left( {1;1} \right)\), \(\left( C \right)\) cắt đường thẳng \(\Delta :3x + 4y + 13 = 0\) theo một dây cung có độ dài bằng 6. Phương trình \(\left( C \right)\) là:
A.\({\left( {x - 1} \right)^2} + {\left( {y - 1} \right)^2} = 16\)
B.\({\left( {x - 1} \right)^2} + {\left( {y - 1} \right)^2} = 5\)
C.\({\left( {x - 1} \right)^2} + {\left( {y - 1} \right)^2} = 25\)
D.\({\left( {x - 1} \right)^2} + {\left( {y - 1} \right)^2} = 9\)

Một quần thể ngẫu phối, alen A quy định lông dài trội hoàn toàn so với alen a quy định lông ngắn; Alen B quy định lông đen trội không hoàn toàn so với alen b quy định lông vàng, kiểu gen Bb cho kiểu hình lông nâu. Hai cặp gen này nằm trên 2 cặp NST thường. Thế hệ xuất phát của quần thể này có tần số alen A là 0,2 và tần số alen B là 0,6. Khi quần thể đạt trạng thái cân bằng di truyền, phát biểu nào sau đây sai về quần thể này?
A.Quần thể có 9 loại kiểu gen và 6 loại kiểu hình.
B.Số cá thể lông ngắn, màu nâu chiếm tỉ lệ lớn nhất trong quần thể.
C.Tần số kiểu hình lông dài, màu đen trong quần thể là 0,3024.
D.Tần số kiểu gen AaBb là 0,1536.

Hình sau đây mô tả cơ chế hoạt động của opêron Lac ở vi khuẩn E.coli khi môi trường có đường lactôzơ. Phát biểu nào sau đây đúng?
A.Operon Lac bao gồm gen R, vùng 1, vùng 2 và các gen Z, Y, A.
B.Khi môi trường nội bào không có lactôzơ, chất X bám vào vùng 2 gây ức chế phiên mã.
C.Chất X được gọi là chất cảm ứng.
D.Trên phân tử mARN2 chỉ chứa một mã mở đầu và một mã kết thúc.

Một quần thể có thành phần kiểu gen là 0,4AA : 0,2Aa : 0,4aa. Tần số alen A và alen a của quần thể này lần lượt là
A.0,2 và 0,8.
B.0,7 và 0,3.
C.0,5 và 0,5.
D.0,4 và 0,6.

Choose the correct option - (A), (B), (C), or (D) - to complete the sentences in the passage.
Questions 1-4 refer to the following article.
LONDON (17 June) - DJ Entertainment announced today that Mr. Peter Evans ___1___ to vice president of the company. Mr. Evans has been the creative force for many successful television shows and movies. His new ___2___ involve exporting DJ Entertainment movies to the Asian market. ___3___.
Mr. Evans has been working for DJ Entertainment since 1999. He started working as an executive producer. One of his big hit shows is Neighbors, which brought in $500 million to the company. Mr. Evans is highly ___4___ by his colleagues for his excellent leadership and outstanding work ethics.
0Câu 1
Questions 1
A. promoted
B.has promoted
C. has been promoting
D. has been promoted
Câu 2
Questions 2
A. trends
B.suggestions
C. superiors
D. responsibilities
Câu 3
Questions 3
A. Therefore, he will be in charge of the Personnel Department.
B.He will also supervise the Overseas Sales Department.
C. For example, he visited many countries in Asia.
D. Accordingly, he will be transferred to Los Angeles.
Câu 4
Questions 4
A. regard
B.regards
C. regarding
D. regarded
A.
B.
C.
D.

Questions 13-16 refer to the following e-mail.
From: rosgrove@lavilli.com
To: henriksson@skanenursery.se
Subject: Svenska Yellow
Date: April 2
Dear Mr. Henriksson,
I represent the Lavilli Garden Stores chain, which is now in the process of ________its product range to include newly developed kinds of trees. We are interested in carrying Svenska Yellow apple saplings in our stores. Since this _______originated in Sweden, we contacted the Association of Swedish Fruit Producers, which recommended your apple nursery to us. On your Web site, it appears you do _______have the product in stock. Initially, we would be interested in buying a small sample of saplings. ___________. Do you offer discounts for bulk purchases?
I look forward to hearing from you.
Sincerely,
Roger Osgrove
Lavilli Garden Stores
0Câu 13
Questions 13
A. expanding
B.expanded
C. expands
D. expand
Câu 14
Questions 14
A. response
B.method
C. ability
D. variety
Câu 15
Questions 15
A. indeed
B.alone
C. quite
D. ever
Câu 16
Questions 16
A. Our nursery has been family-owned for over 100 years.
B.Unfortunately, they are no longer in stock at this point.
C. However, we want to place a larger order in the future.
D. If you do, please visit our Web site for more information on our offer.
A.
B.
C.
D.

Questions 9-12 refer to the following article.
Laptop Funds Approved
New technology ___9___to the students of Fairmont. On Tuesday, Mayor Suzanne Kuiper announced that her Tech Now proposal was approved by the Board of Supervisors. ___10___. The program allots $35,000 to each school in the city for the purchase of laptop computers. Students will be allowed to take home the laptops ___11___of the time for special assignments and class projects, but they will normally be available to the students only ___12___school hours.
0Câu 9
Question 9
A. came
B.was coming
C. is coming
D. comes
Câu 10
Questio 10
A. The vote took place on Monday, June 2.
B.The laptops will be purchased at a discount rate.
C. The final decision is highly anticipated.
D. Nevertheless, the mayor remains content with the decision.
Câu 11
Questions 11
A. some
B.many
C. none
D. all
Câu 12
Questions 12
A. at
B.on
C. during
D. with
A.
B.
C.
D.

Questions 13-16 refer to the following letter.
September 20
Ms. Amy Ellerson
Belgore Insurance Group
126 Sunrise Road
Teaneck, NJ 07666
Dear Ms. Elierson:
Thank you for your purchase of 25 cases of premium paper from Bernstein Paper Products. Your online order was received on September 18 and is ready for shipping. __13__.
We appreciate that you have chosen to make the switch to Bernstein Paper Products for your company’s paper needs. To show our gratitude, we are applying a 5 percent discount to this ___14___ order. ___15___, we are including a reimbursement of shipping charges. Enclosed please find the adjusted invoice and a check for $58.38.
Bernstein Paper Products is pleased ___16__ you. We look forward to working with you in the future.
Sincerely,
Dun Yun
Lead Customer Service Representative
Enclosure
0Câu 13
Question 13
A. Your years of continued patronage are truly valued.
B.However, it seems that you have overpaid on your order.
C. You may expect to receive your order in 5-7 business days.
D. Unfortunately, we are writing to inform you of a delay in delivery.
Câu 14
Question 14
A. upcoming
B.complimentary
C. initial
D. sequential
Câu 15
Questions 15
A. However
B.In addition
C. For instance
D. Still
Câu 16
Questions 16
A. welcomes
B.welcoming
C. to welcome
D. having welcomed
A.
B.
C.
D.

Questions 1-4 refer to the following e-mail.
From: Young Ho Woo, Office of Professional Development
To: All employees
Subject: Lecture series
Date: Tuesday, October 1
Dear Colleagues,
The first of our Surveying the Field lectures will be held on October 3. This ____1______lecture will be led by Roberto Colon, founder of the successful start-up Radio Dedicate. Mr. Colon ____2______what established technology companies can learn from start-up businesses. Mr. Colon’s talk is the only one in the series that addresses start-ups._____3_______. .
As you know. Mr. Colon is a great leader in the industry, so we hope all staff will be present.
Nevertheless, you must seek _____4____ your manager before attending.
Thank you.
Young Ho Woo
0Câu 1
Questions 1
A. final
B.daily
C. revised
D. upcoming
Câu 2
Questions 2
A. discussed
B.will discuss
C. has discussed
D. will have discussed
Câu 3
Questions 3
A. Many large technology companies are privately owned.
B.Corporate lecture series are gaining popularity in the field of technology
C. As a student. Mr. Colon published an article in a prestigious business journal
D. The rest will deal with various other topics, including marketing and customer service.
Câu 4
Questions 4
A. approving
B.who approves
C. the approval of
D. having approved
A.
B.
C.
D.

Questions 5-8 refer to the following letter.
January 28
Ojas Ramachandran
Sawat Clothing Company
Bengaluru 560 001
Karnataka, India
Dear Mr. Ramachandran:
We are writing to let you know about a temporary _____in our order fulfillment service. On March 20, we will begin moving all of our inventory to a new warehouse in Kyoto. ____________.The move will take up to two weeks, ________which time we will be unable to ship overseas orders. _________any delays, please place your next order by March 14. If you have any questions, please don’t hesitate to contact me.
Sincerely
Aiko Oba
Customer Service Director
0Câu 5
Questions 5
A. extension
B.solution
C. improvement
D. disruption
Câu 6
Questions 6
A. This will allow us to keep a larger variety of items in stock.
B.These will be available at a special price for a limited time.
C. Warehousing has become an important industry in the region.
D. You can track the status of your order on our Web site
Câu 7
Questions 7
A. rather than
B.due to
C. during
D. above
Câu 8
Questions 8
A. To avoid
B.Having avoided
C. Avoids
D. Avoided
A.
B.
C.
D.