Nhận định nào sau đây là không đúng?
A.Qui tắc nắm tay phải có thể xác định được chiều đường sức từ của nam châm thẳng.
B.Qui tắc nắm tay phải dùng để xác định chiều của đường sức từ trong ống dây có dòng điện.
C.Qui tắc nắm tay phải có thể xác định được chiều của dòng điện trong ống dây.
D.Ống dây có dòng điện có từ trường tương tự như một nam châm thẳng.

Xét 3 nguyên tử $ {}_{8}^{16}O,\,{}_{8}^{17}O,\,{}_{8}^{18}O $ . Câu nào sai đây không đúng?
A.Nguyên tử khối của 3 nguyên tử lần lượt là 16; 17; 18.
B.Nguyên tử oxi có 3 đồng vị là $ {}_{8}^{16}O,\,{}_{8}^{17}O,\,{}_{8}^{18}O $.
C.3 nguyên tử trên đều thuộc cùng 1 nguyên tố oxi.
D.Hạt nhân mỗi nguyên tử đều chứa 8 proton.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
I agree that we must try to preserve the culture but I disapprove of practices which are based on ___________________ because it can be harmful to the society.
A.religion
B.traditions
C.superstition
D.rituals

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in the following question.
Cultural identity can easily be lost at the second generation of the immigrants because the children become assimilated into the new culture.
A.incorporated in
B.absorbed in
C.isolated from
D.taken in

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The next generations of _______________ may have difficulties forming their cultural identity.
A.immigration
B.immigrants
C.immigrate
D.immigrating

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
I think he is a typical American. He is straightforward in all situations and only cares about the results. 
 
A.rare
B.special
C.uncommon
D.normal

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
People sing the _______________ of their country before all important events.
A.national flag
B.national identity
C.national costume
D.national anthem

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
This is an international school and here we live in a _____________________ community with people from nearly 40 countries.
A.cultural
B.interconnected
C.multicultural
D.crowded

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Although they don’t speak the same language, they could surprisingly ________________ with each other quite well.
A.communicate
B.sign
C.continue
D.commute

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Islam, Buddhism and Christianism are among the most popular _________________ in the world.
A.countries
B.religions
C.regions
D.nations