Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
People often take it for _______________ that we must drive on the right side of the road, but it isn’t true in all countries.
A.reason
B.granted
C.sure
D.certain

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The UNESCO has helped many community to _______________ their cultures and languages.
A.converse
B.exchange
C.preserve
D.serve

Choose the answer A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in the following sentence
‘When in Rome, do as the Romans do’ means that you have to respect and follow the local customs.
A.appreciate
B.understand
C.insult
D.love

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Giving a doll to a child in their special day is a ____________________ in Japan.
A.cultural action
B.cultural behavior
C.cultural practice
D.culture-relation

Choose the answer A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in the following sentence
Many ethnic groups find it hard to maintain their own language.
A.continue
B.discontinue
C.preserve
D.speak

Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in the following sentence
The diversity of cultures in my class helps me to develop a better understanding of different cultures.
 
A.uniformity
B.variance
C.assimilation
D.distinction

Choose the answer A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in the following sentence
Some ethic group has strange practices such as walking on hot plates to pray for rain or killing animals. 
 
A.familiar
B.understanding
C.weird
D.new

Sb có 2 đồng vị, biết $ {}^{121}Sb $ chiếm 62%, đồng vị thứ hai hơn đồng vị thứ nhất 2 nơtron. Nguyên tử khối trung bình của Sb là
A.122,55
B.122,17
C.121,76
D.123

Sb có hai đồng vị $ {}^{121}Sb $ và $ {}^{123}Sb $ , thành phần phần trăm tổng số nguyên tử của đồng vị $ {}^{121}Sb $ là 62%. Nguyên tử khối trung bình của Sb là
A.122,17
B.121,76
C.122,55
D.123

Nguyên tố Cu có 2 đồng vị: $ {}_{29}^{63}Cu,\,{}_{29}^{65}Cu $
Nguyên tố oxi có 3 đồng vị: $ {}_{8}^{16}O,\,{}_{8}^{17}O,\,{}_{8}^{18}O $ .
Số loại phân tử đồng oxit có thể tạo thành là:
A.6
B.3
C.12
D.9