IV. Khoanh tròn một phương án A, B, C hoặc D ứng với từ hoặc cụm từ cần phải sửa lại để có câu đúng

1. There are a lot of changes/ in our city in the past ten years.

                A                      B        C          D

2. If we go on to litter, the environment will become seriously polluted.

                          A        B                                     C          D

3. We’ll never catch them up if you walk as slow as that.

       A                      B                         C          D

4. It’s necessary/ to using /energy-saving bulbs instead of ordinary bulbs.

                A                 B                     C                         D

5. Scientists are looking/ at some alternatives of  energy to /traditional sources.

                          A            B                                               C          D

  IX. Đọc văn bản và trả lời câu hỏi sau:

It used to be that people would drink coffee or tea in the morning to pick them up and get them going for the day. Then cola drinks hit the market. With lots of caffeine and sugar, these beverages soon became the pick-me-up of choice for many adults and teenagers. Now drink companies are putting out so-called "energy drinks." These beverages have the specific aim of giving tired consumers more energy.

   One example of a popular energy drink is Red Bull. The company that puts out this beverage has stated in interviews that Red Bull is not a thirst quencher. Nor is it meant to be a fluid replacement drink for athletes. Instead, the beverage is meant to revitalize a tired consumer’s body and mind. In order to do this, the makers of Red Bull, and other energy drinks, typically add vitamins and certain chemicals to their beverages. The added chemicals are like chemicals that the body naturally produces for energy. The vitamins, chemicals, caffeine, and sugar found in these beverages all seem like a sure bet to give a person energy.

   Health professionals are not so sure, though. For one thing, there is not enough evidence to show that all of the vitamins added to energy drinks actually raise a person’s energy level.

   Another problem is that there are so many things in the beverages. Nobody knows for sure how all of the ingredients in energy drinks work together.

   Dr. Brent Bauer, one of the directors at the Mayo Clinic in the US, cautions people about believing all the claims energy drinks make. He says, “It is plausible if you put all these things together, you will get a good result.” However, Dr. Bauer adds the mix of ingredients could also have a negative impact on the body. “We just don’t know at this point,” he says.

Question 33: According to the passage, what makes it difficult for researchers to know if an energy drink gives people energy? ………………………………………………………………………..

What is the second problem of the beverages mentioned in the passage?

…………………………………………………………………………….

VII. Cho dạng đúng của từ trong ngoặc để hoàn chỉnh câu:

4.  The recent floods caused (wide)______________damage.

5.  You have a wide (choose) ______________between travelling or staying at home.

VIII. Viết lại câu :

6. “ Why don’t you ask him for help?” Jim asked me.

Jim suggested ……………………………………………………………………….

8. We are going to have some workers paint the house.

We are going to have ………………………………………………………………..

10. It’s not a good idea to stay up too late.

It’s better to avoid …………………………………………………………………..

Giúp mk vs nhé !!!

Sử dụng dữ liệu sau trả lời các câu hỏi .

Đặt vào hai đầu điện trở R một hiệu điện thế U = 12V, thì cường độ dòng điện
chạy qua điện trở là 1,5 A.

Câu 7: Điện trở R có thể nhận giá trị nào trong các giá trị sau?
A. R = 12 Ω.

B. R = 1,5 Ω.

C. R = 8 Ω.

D. R = Một giá trị khác.

Câu 8: Nếu thay điện trở R bằng R' = 24 Ω. thì cường độ dòng điện qua R' có thể là giá trị nào trong các giá trị sau?
A. I = 12 A.

B. I = 24 A.

C. I = 1 A.

D. Một giá trị khác.