Choose the word which has the underlined part pronounced differently from the rest.

A. closure

B. sure

C. pleasure

D. leisure

Một người mắt tốt có khoảng nhìn rõ 25 c m ÷ ∞ , dùng một kính lúp có độ tụ  + 20 d p   . Số bội giác của kính khi người này ngắm chừng ở điểm cực cận là:

A.6,5

B.4

C.5

D.6

Một quần thể tự thụ ở một loài thực vật xét một gen hai alen A qui định hoa đỏ trội hoàn toàn so với a qui định hoa trắng. Thế hệ bố mẹ trong quần thể có kiểu hình hoa đỏ chiếm 60%, biết cây hoa đỏ thuần chủng không có khả năng sinh sản. Ở thế hệ F1 người ta thu được tổng số cây hoa đỏ có tỉ lệ 37,5%. Theo lí thuyết tỉ lệ cây hoa đỏ có kiểu gen đồng hợp ở thế hệ F1 là?

A.   50%.

B.   12,5%.

C.   25%   

D.   40%.

On April Fools' Day, people in many countries play tricks on each other. Usually, the tricks (1) ___ involve _ making friends believe something ridiculous. On this day you could, for example, tell a friend there is a huge spider on their shoulder. If they believe you, you have succeeded (2) ___ in ​ ___ fooling them, and even if you only trick them for a second, you have (3) __ the __ right to shout "April Fool!" This day, 1st April, is also known as All Fools’ Day. In some countries, such as Ireland or Cyprus, you can only try to fool someone before twelve noon. If you do play tricks after midday, you will become the fool (4) _instead _____. So it is advisable for you to do that in the morning. (5)___Whatever ___ you do for, all you want is fun rather than do harm to others. And if you don’t want to be foolish, be sensitive! But how did this (6) __tradition ___ begin? Some say April Fools’ Day originated in France when that country adopted the new Gregorian calendar. In the previous calendar, New Year was celebrated (7) ___from__ 25th March until 1st April, not on 1st January, as in the Gregorian calendar. Some people refused to (8) __follow___ the new calendar, and continued to celebrate the New Year in spring. Other people made fun of them and laughed at them (9) __because ___ they were old-fashioned and didn't want to change. Now April Fools' Day has become a global tradition, and no one is safe! People play tricks on anyone, not just on (10) __those____ who don't want to change with the times.