Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Please remain in (A) your assign seats (B) until (C) the instructor dismisses (D) the class.

A. in

B. assign seats

C. until

D. dismisses

Cho tam giác ABC. Hãy vẽ một tam giác đồng dạng với tam giác ABC theo tỉ số 1/2.

Cho tam giác ABC. Kẻ đường thẳng a song song với cạnh BC và cắt hai cạnh AB, AC theo thứ tự tại M và N. Hai tam giác AMN và ABC có các góc và các cạnh tương ứng như thế nào ?

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.

  After two decades of growing student enrollments and economic prosperity, business schools in the United States have started to face harder times. Only Harvard's MBA School has shown a substantial increase in enrollment in recent years. Both Princeton and Stanford have seen decreases in their enrollments. Since 1990, the number of people receiving Masters in Business Administration (MBA) degrees, has dropped about 3 percent to 75, 000, and the trend of lower enrollment rates is expected to continue.

          There are two factors causing this decrease in students seeking an MBA degree. The first one is that many graduates of four-year colleges are finding that an MBA degree does not guarantee a plush job on Wall Street, or in other financial districts of major American cities. Many of the entry-level management jobs are going to students graduating with Master of Arts degrees in English and the humanities as well as those holding MBA degrees. Students have asked the question: "Is an MBA degree really what I need to be best prepared for getting a good job?". The second major factor has been the cutting of American payrolls and the lower number of entry-level jobs being offered. Business needs are changing, and MBA schools are struggling to meet the new demands.

The word “struggling” as used in the last sentence is closest in meaning to   .

A. evolving

B. plunging

C. starting

D. striving

Phương trình H⁺ + OH^- → H₂O là phương trình ion rút gọn của phản ứng có phương trình nào sau đây?

A. NaOH + NaHCO₃ → Na₂CO₃ + H₂O

B. NaOH + HCl → NaCl + H₂O

C. Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O

D. 3HCl + Fe(OH)₃ → FeCl₃ + 3H₂O

Em hãy kể những loại thiết bị điện có trong mạng điện ở nhà em.