Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 18 to 22.

We all want to live in a clean and green world and breathe pollution free air. For this kind of environment we desperately need a fossil fuel free world. Scientists are toiling hard to come up (18)______ alternative fuels which can replace conventional fuels. One such study was presented at the 237th National Meeting of the American Chemical Society. This study throws interesting light on the first economical, eco-friendly process to (19)______ algae oil into biodiesel fuel. The scientists are quite hopeful that one day America will become independent (20)______ fossil fuels. Ben Wen is the (21)______ researcher and vice president of United Environment and Energy LLC, Horseheads, N.Y. According to him, “This is the first economical way to produce biodiesel from algae oil. It costs much less than conventional processes because you would need a much smaller factory, there (22)______ no water disposal costs, and the process is considerably faster.”
Question 19:

A. adapt

B. transform

C. modify

D. alter

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

Do you realize that I would have been given that job if you had not been silent?

A. As you did not talk, I did not get the job. 

B. Because you asked, I did not get the job. 

C. Although you asked, I got the job.

D. Although you did not talk, I got the job.

a) truyện kể dân gian chủ yếu do ai sáng tác và lưu truyền?

A.Những người lao động bình dân

B.Các nhà nho thời phong kiến

C.Các nhà văn trong nhiều thời kì

D. Các ông vua

b) truyện kí trung đại có đặc điểm gì nổi bật

A.Phản ánh sự kiện lịch sử

B. Phản ánh mâu thuẫn xã hội

C.Đề cao đạo lý làm người

D.Thể hiện ước mơ của nhân dân

\(2.2+2.2+2-2.2=4+4+2-4=6\)

Không.

Phân số có tử là 2, lớn hơn 1919 và nhỏ hơn 1818 là :

(A)\(\dfrac{2}{9}\) (B)\(\dfrac{2}{8}\) (C) \(\dfrac{2}{17}\) (D)\(\dfrac{2}{10}\)