Ở động vật biến nhiệt, nhân tố sinh thái ảnh hưởng rõ rệt đến tốc độ phát triển và số thế hệ trong năm?

cho 4 đường thẳng (d1),(d2),(d3)và(d4) lần lượt là các hàm số y=-2x+7 ; y=-2x ; y=3x+2 ; y=mx+n(m0và m-2)

cho đường thẳng (d3) cắt (d1) và (d2) tại A và B (d4) cắt (d1) và (d2) tại D và C. tìm m,n sao cho ABCD là hình bình hành

viết câu hoàn chỉnh

1/ old/ man/ wish/ his/ grandchild/ visit/ him/ more/ often

2 I/ wish/ you/ can/ spend/ more/ time/ on/ study

3/ They/ wish/ their/ team/ be/ champion

4 I/ wish/ I/ have/ more/ friends/ and/ I/ not/ be/ lonely

5/ Mary/ wish/ her/ parents/ not/ have/ go/ on/ business/ trips/ so/ often

6/ Many/ people/ wish/ they/ be/ wealthy/ but/ I/ do/ not

7/ I/ wish/ my/ mother/ be/ less/ busy/ so that/ she/ have/ more/ time/ for/ me

8/ Jim/ wish/ his/ parents/ not/ expect/ too/ much/ from/ him

chia động từ trong ngoặc

1/ Jane wish she ( can/ go) ____ travelling at least once a year.

2/ Jim wishes he ( earn) _____ more money so that he would live more comfortable.

3/ My mother wishes she ( not have) ____ to work for extra hours

4/ The little boy wishes it (not rain) ____ at the moment

5/ I wish I (be ) healthier so that I could play some extreme sports

6/ Tim is sad because he has lost his bike. He wishes his mother ( buy) him a new one

7/ I wish someone ( offer) me an opportunity to study abroad

8/ Jim is bored as he is doing his homework now. He wish he (do) his homework

9/ My father is an officer but he wishes he (be) a famous singer

10/ My mother never lets me go to school on my own. I wish she (let) me go alone

Viết câu hoàn chỉnh

1. Jim/ always/ want/ know/ whether/ he/ should/ study/ abroad/ or/ not.

2. When/ I/ be/ small/ I/ tell/ my mother/ I/ want/ be/ superman.

3. Jim/ be/ confused/ because/ he/ not/ sure/ what/ to/ do/ now.

4. I/ have/ no/ idea/ what/ they/ do/ at the moment.

5.Please/ show/ me/ how/ to/ get/ nearest/ post office.

6. Now/ we/ have to/ decide/ where/ go/ and/ what/ do/ tomorrow.

7. You/ make/ up/ your/ mind/ where/ spend/ your/ summer/ yet?

8. I/ cannot/ understand/ why/ Jim/ fail/ the/ final test.

9. My mother/ just/ find/ out/ where/ I/ hide/ my/ exam paper.

10. Yesterday, my teacher/ carfully/ explain/ how/ young/ birds/ learn/ to/ fly.

1 Many doctor say:" Teenagers undergo many physical and mental changes during their puberty"

2 " This story happened long ago" he said

3 Peter said:" I hope it will be sunny tomorrow"