X là hỗn hợp gồm phenol và metanol. Đốt cháy hoàn toàn X được nCO 2 = nH 2 O . Vậy % khối lượng metanol trong X là

A. 25%. 

B. 59,5%. 

C. 50,5%.

D. 20%.

Mark the letter A, B, C or D on your answer sheet to indicate the sentences that is closest in meaning to each of the following question.

Don't take any notice of all his complaints about his health; there's nothing wrong with him

A. You can ignore all his talk of being ill; he's actually perfectly healthy

B. Try to avoid the subject of his health as I am tired of hearing all about his complaints

C. Don't listen to him talking about his health; it's his favorite subject

D. If you let him, he would talk only about his ill- health though actually he is quite healthy

James: “Marry has difficulty fitting in.”

May: “Well, I guess she__________ to this type of work.”

A. is used               

B. didn’t use                    

C. doesn’t get used                           

D. hasn’t been used 

Read the passage and choose the best option to complete each of the blanks

PROBLEMS OF WATCHING TELEVISION IN BRITAIN

British parents are always complaining that their children spend too much time gluing to the telly and not enough (37)____ other activities like sports and reading. A survey recently carried out on people's viewing habits (38)____ not disapprove it. It shows that young people in Britain spend on (39)___ twenty three hours a week in front of the television, (40)_______ works out at over three hours every day.

What is surprising, however, is the fact that the average adult watches even more: an incredible 28 hours a week. We seem to have become a nation of telly addicts. Just about (41)_______ household in the country has a television and over half have two or more. According (42)___ the survey, people nowadays don't just watch television sitting in their living room, they watch it in the kitchen and in bed as well.

          The Education Minister said a (43)___weeks ago that Britain's pupils should spend more time reading. Unfortunately, parents are not setting a good example: adults do (44)__ reading than young people. In fact, reading is (45)___ the bottom of their list of favorite pastimes. They would (46)____ listen to the radio, go to the cinema or hire a video to watch on their television at home.

Điền vào ô 37

A. in                    

B. For                            

C. at                     

D. on

Cho 9,6 gam hỗn hợp X gồm Mg và Fe₃O₄ vào 300 ml dung dịch HNO₃ 2M, thu được dung dịch Y và 0,896 lít (đktc) hỗn hợp N₂O và NO có tỉ khối so với hiđro là 16,75. Trung hòa Y cần dùng 40 ml NaOH 1M thu được dung dịch Z, cô cạn Z thu được m gam muối khan. Biết rằng phản ứng xảy ra hoàn toàn và khi cô cạn muối không bị nhiệt phân. Giá trị m là

A.  42,26.

B.  19,76.

C.  28,46.

D.  72,45.

It was_________that I bought those books

A. this shop

B. this shop where

C. at this shop

D. the shop

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 each of the following questions.

Today the number of start-ups in Vietnam is mounting as the government has created favourable conditions for them to develop their business

A. peaking

B. decreasing

C. varying

D. rising

Một mẫu supephotphat đơn khối lượng 15,55 gam chứa 35,43% Ca(H₂PO₄)₂ còn lại là CaSO₄. Độ dinh dưỡng của loại phân trên là

A. 61,20%.

B. 21,68%.

C. 21,50%.

D. 16%.

Nhận xét nào sau đây là không đúng ?

A. các loài đẻ trứng đều thụ tinh ngoài 

B. các loài đẻ con đều thụ tinh trong

C. các loài thụ tinh ngoài thuờng đẻ rất nhiều trứng

D. thụ tinh ngoài cần có nước

Hãy nêu phương án thí nghiệm dùng cân vẽ ở hình 10.4 thay cho lực kế để kiểm tra dự đoán về độ lớn của lực đẩy Ác-si- mét.