Read the following passage and choose the best answer for each blank.

SPRING FESTIVALS

From (26) _______ times people have celebrated the end of winter and the new life that spring brings. One of the most important Christian festivals is Easter, (27) _______ Christians remember the death and resurrection of Jesus Christ Easter, however, is not the (28) _______ spring festival. In Sweden, people celebrate the end of the winter by making (29) _______ bonfires. Fire also plays an important part in the Hindu festival of Holi. In some villages children are (30) _______ round bonfires by their mothers to protect them(31) _______ danger in the coming year. Buddhists in Thailand soak (32) _______ in water when celebrating their New Year, which (33) _______ in the middle of April. In Antigua in Guatemala they carpet the streets with flowers. Chinese spring parades are (34) _______ colourful, but (35) _______ flowers they have large dragon puppets which dance in the streets.

Question 28:

A. single

B. one

C. only

D. lonely

Oxit kim loại bị khử bởi CO ở nhiệt độ cao là 

A.  A l 2 O 3 . 

B.  K 2 O . 

C. CuO. 

D. MgO.