Số ?

36520 ; 35521 ; .. ; … ;… ;36525 ;…

Phát biểu nào sau đây là sai? 

A. Thủy phân benzyl axetat trong môi trường axit thu được phenol

B. Glucozơ và fructozơ đều là chất rắn kết tinh ở điều kiện thường. 

C. Phân tử amilozơ và amilopectin đều chứa liên kết α-1,4-glicozit

D. Phân tử triolein và tristearin đều có chứa 57 nguyên tử cacbon

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. color

B. passion

C. behave

D. children

Vitamin A công thức phân tử C₂₀H₃₀O, có chứa 1 vòng 6 cạnh và không có chứa liên kết ba. Số liên kết đôi trong phân tử vitamin A là

A. 7.

B. 6.

C. 5

D. 4

Tiêu hoá là quá trình

A. làm biến đổi thức ăn thành các chất hữu cơ.

B. biến đổi các chất đơn giản thành các chất phức tạp đặc trưng cho cơ thể.

C. biến đổi thức ăn thành các chất dinh dưỡng và tạo ra năng lượng ATP.

D. biến đổi các chất dinh dưỡng có trong thức ăn thành những chất đơn giản mà cơ thể hấp thụ được.

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 35 to 42.

Though called by sweet–sounding names like Firinga or Katrina, tropical cyclones are huge rotating storms 200 to 2,000 kilometers wide with winds that blow at speeds of more than 100 kilometers per hour (kph). Weather professionals know them as tropical cyclones, but they are called hurricanes in the Caribbean Sea, typhoons in the Pacific Ocean, and cyclones in the Indian Ocean. They occur in both the northern and southern hemispheres. Large ones have destroyed cities and killed hundreds of thousands of people.

Tropical cyclones begin over water that is warmer than 27 degrees Celsius (80 degrees Fahrenheit) slightly north or south of the earth’s equator. Warm, humid air full of water vapor moves upward. The earth’s rotation causes the growing storm to start to rotate around its center (called the eye). At a certain height, the water vapor condenses, changing to liquid and releasing heat. The heat draws more air and water vapor upward, creating a cycle as air and water vapor rise and liquid water falls. If the cycle speeds up until winds reach 118 kilometers per hour, the storm qualifies as a tropical cyclone.

Most deaths in tropical cyclones are caused by storm surge. This is a rise in sea level, sometimes seven meters or more, caused by the storm pushing against the ocean’s surface. Storm surge was to blame for the flooding of New Orleans in 2005. The storm surge of Cyclone Nargis in 2008 in Myanmar pushed seawater nearly four meters deep some 40 kilometers inland, resulting in many deaths.

It has never been easy to forecast a tropical cyclone accurately. The goal is to know when and where the next tropical cyclone will form. “And we can’t really do that yet,” says David Nolan, a weather researcher from the University of Miami. The direction and strength of tropical cyclones are also difficult to predict, even with computer assistance. In fact, long–term forecasts are poor; small differences in the combination of weather factors lead to very different storms. More accurate forecasting could help people decide to evacuate when a storm is on the way.

According to the passage, a storm surge is ______.

A. a rise in sea level

B. pushing seawater

C. a tropical cyclone

D. inland flooding