C

 B

 C

 A

 D

 C

 B

 A

 D

 D

 B

 C

 C

1. ____________ is not very far from here to the harbour.

A. There                      B. It                             C. This                         D. That

2. Tom and Jerry is an ________ movie for everyone.

A. entertained             B. entertain                 C. entertaining                        D. entertainment

3. I am going to Rio Carnival _______ performers dance.

A. watch                     B. watching                 C. watched                  D. to watch

4. There are many_______on the street: cars, buses, bikes, motorbike.

A. vehicles                  B. transport                 C. engines                   D. machines

5. Please get____________the bus. We have finished our journey.

A. on                           B. of                            C. off                          D. up

Ngành dịch vụ chiếm tỉ trong bao nhiêu % trong cơ cấu GDP của Hoa Kì

  A. 68%

B. 5 %

C. 27 %

D. 72%

\(\dfrac{2.3.5.\left(-7\right).12}{3.\left(-5\right).7.14}=\dfrac{1.1.1.\left(-1\right).12}{1.\left(-1\right).1.7}=\dfrac{-12}{-7}=\dfrac{12}{7}\)

\(5-\dfrac{14}{3}=\dfrac{1}{3}\)

1. The film had already ended by the time he got arrived

.2. I went stairs because I have hear a noise

3. We coundn't send  you a postcard because we have forgeted our address book.

4. Have you finish your homework before you went to the cinema?

5. I went to the box office at lunchtime, but they have already sold all the tickets.

6. I felt very tired when I got home, so I gone straight to bed.

7. I felt better by the summer, but the doctor warned me not to do too much. I was very ill.

8. Mai  have lived in Hai Phong for five years before she have moved to Ha Noi three years ago

9. Phong  was told me yesterday that he have leart French for a year.

10. Ms. Hong have worked at our school for twenty years before she was retired last June

Trong \(\Delta ABC\) vuông tại A có :

\(\Rightarrow AB^2=BC^2-AC^2\) ( định lý Py-ta-go)

\(\Leftrightarrow AB^2=41^2-40^2\)

\(\Leftrightarrow AB^2=1681-1600\)

\(\Leftrightarrow AB^2=81\)

\(\Rightarrow AB=9\left(cm;AB>0\right)\)

Vậy AB = 9cm

\(\dfrac{1}{6}+\dfrac{-2}{5}=\dfrac{5}{30}+\dfrac{-12}{30}=\dfrac{-7}{30}\)

\(\dfrac{5}{12}-\dfrac{7}{8}=\dfrac{10}{24}-\dfrac{21}{24}=\dfrac{-11}{24}\)

\(\dfrac{-4}{25}:\dfrac{-32}{45}=\dfrac{-4}{25}.\dfrac{-45}{32}=\dfrac{-1}{5}.\dfrac{-9}{8}=\dfrac{4}{40}\)

\(\dfrac{-2}{9}.\dfrac{7}{11}+\dfrac{-2}{9}.\dfrac{10}{11}+\dfrac{-2}{9}.\dfrac{5}{11}=\dfrac{-2}{9}\left(\dfrac{7}{11}+\dfrac{10}{11}+\dfrac{5}{11}\right)=\dfrac{-2}{9}.\dfrac{22}{11}=\dfrac{-2}{9}.2=\dfrac{-4}{9}\)

Câu 9 : Trong phản xạ trung tâm xử lý thông tin nằm ở đâu ?

A . Não

B. Tủy sống

C. Thần kinh

D. Tiểu não

nội dung nào sau đây không đúng với hiện tượng ngày, đêm dài ngắn theo mùa?
A. càng xa xích đạo thì chênh lệch ngày, đêm càng lớn
B.càng gần xích đẹo thì chênh lệch ngày, đêm càng lớn
C. ở hai cực có ngày, đêm kéo dài suốt 6 tháng liên tục
D. ở khu vực xích đạo ngày, đêm luôn bằng nhau