\(i=90^o-60^o=30^o\\ \\ i=i'\Leftrightarrow i'=30^o\)

D

Đáp án là D nhé bn 

B

B

B

T - T - T - NI - F

A

A

A

C

B

21. A
22. A
23. A
24. C
25. B

21.B

22.A

23.C

24.B

25.D

21. B

22. A

23. C

24. B

25. D

C

C

Đáp án C

Chúc bạn học tốt <3

B

B

B

C

C

c

25. Where is the post office?
→ The post office is next to the bus stop.
26. Where is the museum?
→ The museum is in front of the park.
27. Where is the souvenir shop?
→ The souvenir shop is between the bookstore and the toy store.

25. There is a post office next to the bus stop

26. The museum is in front of the park

27. The souvenir shop is between the bookstore and the toy store