Cho tia sáng SI chiếu tới gương phẳng hợp với gương phẳng 1 góc 40°.
a) | Vẽ tia phản xạ , Trình bày cách vẽ tia phản xạ . |
b) | Tính góc phản xạ . c) Giữ nguyên tia tới thu được tia phản xạ theo phương thẳng đứng từ trên xuống dưới . Dựng gương?
c) |
III. Rewrite these sentences as directed:
1. My favourite hobby is collecting stamps.
I am…………………………………………………………………………………..
2. Lan finds it difficult to carve eggshells.
……………………………………………………………………………………….
3. Mai tries to learn English because she wants to go abroad.
…………………………………..so…………………………………………………
4. Because Hoa was sick, she didn’t go to class yesterday.
…………………………………………because of………………………………….
……………………………………so………………………………………………..
5. Women are more careful drivers than men.
Women drive…………………………………………………………………………
6. My mother began to teach English 10 years ago.
My mother has……………………………………………………………………….
7. The last exercise is difficult. This one is easy.
This exercise is……………………………………………………………………….
8. Your house is more beautiful than my house.
My house …………………………as…………………………as……………….
9. My sister can sing English songs. I can sing English songs. (too)
……………………………………………………………………………………….
10. I don’t draw well. My brother doesn’t draw well. (either)
……………………………………………………………………………………….
11. We can paint this window in half an hour.
It takes……………………………………………………………………………...
12. The train was late because of the thick fog.
Because…………………………………………………………………………….
13. I think no that city is more beautiful than Paris.
I think Paris………………………………………………………….in the world.
14. Mr Pike teaches history of arts. Mrs May teaches history of music. (same )
Mr Pike……………………………………………………………………………
15. This bike is 800,000 VND. That bike is 600,000 VND. ( different)
The price……………………………………………………………………………
I. Arrange the words to make complete sentences:
relaxing/ because/ I/ it/ fishing/ is/ enjoy/think/ I.
………………….…………………………………….....................................................
models/ I/ hobby/ making/ is/ think/ interesting/ an
………………………….. … ……………………………………………….................
to/ shape/ doing/ help/ stay/ sports/ can/ in/ you
…………………………..……………………………………………….......................
good/ people/ not/ sick/ are/ who/health/ people/ in/ are.
………………………………………………………….................................................
to/ it/ why/ you/ is/ volunteer/ important/ to/ want/ know/
………………………………………………………………………………………….
a/ how/ people/ many/ day/ family/ do/ have/ meals/ in/ often/ your/ ?
…………………………………………………………………………………………
popular/ the/ Spring roll/ Vietnam/ is/ most/ in/ dish
……………………………………………………………………………………….
bread/ Peter/ not/ left/ breakfast/ has/ any/ for/ got
……………………………………………………………………………………….
television/ rock/ was/show/ last/ there/ roll/ on/ and/ a/ live/ of/ night
……………………………………………………………………………………….
world/ was/ the/ famous/ the/ in/ Mozart/ of/ most/ composers/ one
………………………………………………………………………………………