Cho 100 ml dung dịch glucozơ chưa rõ nồng độ tác dụng với một lượng dư A g N O 3 (hoặc A g 2 O ) trong dung dịch N H 3  thu được 10,8 gam bạc kết tủa. Nồng độ mol của dung dịch glucozơ đã dùng là :

A. 0,3M.

B. 0,4M.

C. 0,2M.

D. 0,5M.

He broke my watch.

A. My watch were broken.

B. My watch be broken.

C. My watch is broken.

D. My watch was broken.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27.

Every year, thousands of people travel to Britain in order to improve their standard of English. For many, however, this can be a painful experience due to the fact that it involves (23) _______ a strange school, staying in sometimes unpleasant accommodation and living in an unfamiliar culture. One answer to these (24) _______ is the Homestay method. With this, students are each assigned a teacher suited to their language requirements and interests. As well as giving individual tuition, the teacher provides the student (25 ) _______ information about what activities are available locally and takes them on trips. Students get between ten and twenty hours of tuition a week and are also expected to join in the family’s daily activities. The students speak English at all times and therefore learn (26) _______ to use the language in everyday situations. Homestay programmes usually last for up to four weeks. (27) _______ costs are higher than of regular language schools, students can feel confident that they will be receiving top-class language teaching in a safe and pleasant environment.

Question 24

A. problems

B. solutions

C. methods

D. ways

Nô lệ bạn ơi

khó thế bây giờ em mới học lớp 6 thôi

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