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 25 to 29.

The warming of the Pacific Ocean has created weather patterns (25) _______ strongly affect the world. When the water is warm, the amount of rainfall in Indonesia and the surrounding regions decreases. Australia could (26) _______ experience a drought in many parts. On the other hand, Chile (which borders the Pacific Ocean) is preparing for (27) _______ rainstorms. In Pakistan and northwestern India, the weather pattern makes the rainy season weaker and makes the area much drier.

This happening is called El Nino and is used by weather forecasters to make long-range weather predictions. They also know that El Nino will unusually bring heavy rains to the southwestern part of the United States and make the central part of the country drier at the same time.

According to research, weather forecasters used to know about the coming weather with certainty. Now everything has become completely different.

El Nino itself used to be (28) ________. It would occur every two to seven years. But now, this weather pattern is becoming more frequent. We cannot say when and how often tornadoes or cyclones occur. Scientists are unsure of the reason for this (29) _______ on a global scale either.

Điền vào ô trống 25

A. what

B. when

C. whether

D. that

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

He admits that quite__________very experienced climbers have died on the West Ridge route.

A. a little

B. a few

C. some

D. few

Cho phản ứng: NaCrO₂ + Br₂ +NaOH → Na₂CrO₄ + NaBr + H₂O. Sau khi phản ứng cân bằng, tổng hệ số tối giản của phản ứng là

A. 24

B. 25

C. 28

D. 26

Thành phần chính của quặng photphorit là canxi photphat. Công thức của canxi photphat là

A. Ca(H₂PO₄)₂.

B. CaHPO₄.

C. Ca₃(PO₄)₂.

D. CaSO₄.

Kết quả phép lai thuận nghịch khác nhau, đời con luôn biểu hiện kiểu hình giống mẹ là đặc điểm của quy luật di truyền nào?

A. quy luật Menđen

B. Tương tác gen

C. Hoán vị gen

D. Di truyền ngoài nhân

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions

Corazon Aquino was the first woman in the Philippines. She was elected as the president of the country.

A. Corazon Aquino was the first woman who is elected as the president of the Philippines

B. Corazon Aquino was the first woman to be elected as the president of the Philippines

C. Corazon Aquino was the first woman elected as the president of the Philippines

D. Corazon Aquino was the first woman being elected as the president of the Philippines

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions

A. religious

B. librarian

C. commercial

D. Japanese