tìm x, y thoả mãn điều kiện: 2x² + y² = 4x -2xy - 4

\(CaCO_3\)

1D

2B

3A

4A

5D

6D

7D

8A

9B

10D

Cây có hoa có 6 cơ quan: hoa, quả, hạt, rễ, thân, lá.

It has more shopping malls and more amusing parks.

Tom always feels relaxed when he goes to the country.

You should go scuba diving or snorkeling and enjoy seafood.

They can help doctors and operate on sick people.

These products are environmentally friendly.

The Louvre Museum is the largest museum in the world.

Nếu là Hà, em sẽ:

- Khuyên các bạn không nên vẽ bậy lên tường của ngôi đền cũng như những nơi khác.

- Báo với bảo vệ hoặc chính quyền địa phương.

- Rút ra bài học và kinh nghiệm cho bản thân khi đến nơi công cộng.

- Tuyên truyền cho mọi người về ý thức khi đến những nơi như: đền, chùa,...

...

Nhiệt độ, diện tích bề mặt, độ ẩm, tốc độ gió và áp suất khí quyển là những yếu tố ảnh hưởng đến tốc độ bay hơi của chất lỏng.

C. READING

I. Choose the best option A, B, C, or D to complete the passage.

         My name is Lan Anh. Now I’ll tell you about my favorite hobby. I have (1)______ hobbies, but my favorite is making greeting cards. I (2)_________ this hobby two years ago. Now I can make different kinds of cards for my family, teachers, and friends. It’s an (3)_________ hobby. I just need some colored paper, colored pencils, and some glue. Making cards makes me more patient and (4)_________. I enjoy it so much. I’m sending you (5 ) _________ next week on your birthday. I hope you’ll (6)___________ it.

1. A. any                                 B. an                            C. some                       D. little

2. A. wanted                            B. started                     C. have                        D. begin

3. A. expensive                       B. hard                        C. easy                        D. difficult

4. A. tired                                B. bored                      C. inactive                   D. creative

5. A. a card                             B. a book                     C. a bag                       D. a school bag

6. A. like                                 B. hate                         C. detest                      D. throw

A Grade 7 student and his friends have an idea of collecting (7) ________ for homeless children in his town. They call it the “Book Birthday Party”. Every month they will select a birthday of a friend in his class or a child in his neighborhood to celebrate (8) _______ special birthday party. It is just a simple party.  Everyone who comes to the party should bring some healthy food, drink, and a book (9) ________ any kind: storybook, textbook, notebook, comic, etc. Those who cannot bring books will help with collecting and sending books to the (10) ____________ children. They believe that the healthy food and drink will help them stay (11) ________ and the books will help homeless children with their study. Everyone will be (12) ________!

7. A. plants                             B. water                      C. books                      D. flowers

8. A. a                                     B. an                            C. any                          D. some

9. A. about                              B. in                            C. on                          D. of

10. A. rich                               B. homeless                C. rude                        D. naughty

11. A. fat                                 B. thin                         C. strong                     D. weak

12. A. tired                              B. sad                          C. unhappy                  D. happy