23. C
24. A

18. C

I. Choose the word/ phrase (A, B, C or D) that best fits the space in each sentence. (2.5 pts)
1. Are you very busy __________ Monday mornings? - No! I always have time for a cup of coffee
A. from B. to C. out D. on
2. London is also known __________ “The Square Mile” beacause its area is almost one square mile.
A. with B. of C. as D. for
3. She didn’t hear the dog barking outside beacause she __________ headphones.
A. wore B. was wearing C. wearing D. is wearing
4. That is Maryam, the girl __________ visited Lan and Nga last week.
A. who B. whom C. whose D. which
5. She felt a little bit cold, __________ she put on her coat.
A. or B. because C. so D. but
6. My Japanese pen pal, Yoko, speaks English very __________.
A. best B. excellent C. well D. good
7. I like the new idea of those __________ spoons which can be eaten after use as it is made of good rice.
A. edible B. inedible C. poisonous D. wooden
8. One plastic bottle recycled saves enough energy to run a 60-watt light __________ for 6 hours.
A. bulb B. standard C. electricity D. bill
9. David: “It’s terrible. I don’t think I will be able to pass the exam.”
- Mary: “__________”
A. Let’s try it.
B. Don’t worry. Everything will be all right,
C. Ok. What’s that
D. Why not pass it?
10. Sue: “You have read that article on the website, haven’t you”
Peter: “__________”
A. Sure, thanks. B. Not at all! Go ahead.
C. Not yet. Why? D. Yes, of course, I will.

Diện tích hình vuông có cạnh 4dm là:
     4 x 4 = 16 (dm²)
           Đ/s: 16 dm²

Diện tích hình vuông có cạnh là 3cm là:
    3 x 3 = 9 (cm²)
         Đ/s: 9 cm²

1. Đúng
2. Đúng
3. Đúng
4. Đúng
5. Sai
6. Đúng
7. Đúng

Đúng

60 - 26,75 - 13,25
= 60 - ( 26,75 + 13,25 )
= 60 - 40
= 20

D

\(20-\left[2^3\cdot3-\left(5-2\right)^2\right]\)
\(=20-\left[24-3^2\right]\)
\(=20-\left[24-9\right]\)
\(=20-15\)
\(=5\)