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.

          There are more (23) _________ today, so people can travel to a lot of places. We can have chances (24) _________ visit famous tourist attractions or to go to schools or offices. However, there will be more danger on the road. Some drivers drink beer or alcohol, so they may cause accidents easily. In big cities, there is also (25) _________ pollution because of the smoke from transports. Therefore, people living there may have (26) _________ problems. Moreover, the traffic jam can cause people to feel annoyed. If we want to prevent these problems, we should use (27) _________ such as bus.

Read the following passage and mark the letter A,B,C or D to indicate the correct answer to each of the questions.

Titanicis a romantic film, which was directed by James Cameron. However, it’s also about a disaster. It stars Leonardo Di Caprio and Kate Winslet. The film is about the sinking of the ship Titanicon its first voyage. The main characters are Jack Dawson and Rose De Witt Bukater. Jack saves Rose from killing herself during the journey on board the ship. Although they are from different social classes, and Rose is already engaged, they fall in love. The film has a sad ending: the Titanicsinks and more than a thousand people die in the disaster, including Jack. Critics say it is a must-see. I agree, because the story is moving and the acting is excellent. The special effects, visuals, and music are also incredible. Titanic is a very sad film. Nevertheless, many people really love it. Go and see it if you can

28. Titanic is ___________.

29. The main characters are ____________.

30. Which of the following is NOT mentioned in the text?

A. The film is about the sinking of the ship Titanicon its first voyage.

B. Jack saves Rose from killing herself during the journey on board the ship.

C. More than a thousand people die in the disaster, including Rose.

D. The special effects, visuals, and music are also incredible.

31. The word “it” in line 6 refers to ___________.

A. the ending             B. the plot                          C. the film                 D. the disaster

32. The word “incredible” is closest meaning to ___________.

A. unreasonable         B. unbelievable                  C. impossible            D. uncomfortable

Cho tam giác $ABC$ vuông tại $A$ có $\hat{B}=50^{\circ}$. Trên $BC$ lấy điểm $H$ sao cho $HB=BA$, từ $H$ kẻ $HE$ vuông góc với $BC$ tạ $H,(E$ thuộc $AC)$
a) Tính $\widehat{C}$.
b) Chứng minh $BE$ là tia phân giác góc $B$.
c) Gọi $K$ là giao điểm của $BA$ và $HE$, $BE$ cắt $KC$ tại $I$. Chứng minh rằng $I$ là trung điểm của $KC$.

Hoàn thành bảng sau

a) Xác định hóa trị của N trong hợp chất N₂O₅

b) Xác định hóa trị của Cu trong hợp chất Cu(OH)₂. Biết nhóm – OH có hóa trị I