Đun nóng hỗn hợp hai chất đồng phân (X, Y) với dung dịch $H_{2}SO_{4}$ loãng, thu được hai axit ankanoic kế tiếp nhau trong dãy đồng đẳng và hai ankanol. Hoà tan $1$ $gam$ hỗn hợp axit trên vào $50$ $ml$ $NaOH$ $0,3M$, để trung hoà $NaOH$ dư phải dùng $10$ $ml$ $HCl$ $0,5M$. Khi cho $3,9$ $gam$ hỗn hợp ancol trên tác dụng hết với $Na$ thu được $0,05$ $mol$ khí. Biết rằng các gốc hidrocacbon đều có độ phân nhánh cao nhất. CTCT của $X$, $Y$ là?

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a. bowl b. cup c. sweet d. bunch 2. a. activity b. season c. weather d. like 3. She …… doing aerobics now. A. are B. does C. is D. has 4. George …… before he goes to school. A. usually is swimming B. is usually swimming C. usually swims D. swims usually 5. ………………..bowls of rice do you eat? A. How often B. How many C. How much D. How far Use these words to make a complete sentence. There is one example. (1point) 1. It/ cold/ foggy/tomorrow. ......................................................................................................................................... 2 do/ of/ what/ think/ you/ Ha Long Bay/ ? …………………………………………………………………………………………. 3 There/ two/ seasons/ south/ Viet Nam. .......................................................................................................................................... 4 Which / place/ like/ you/ Ha Long Bay/ Ba Na Hill? ......................................................................................................................................... 5 Sara/ more/ thinks/ Dam Sen Park/ exciting / than/expected. ......................................................................................................................................... 6. a / I’d / an / sandwich / apple, / please / and / like. ......................................................................................................................................... 7. do / eat / you / sausages / every / day / many / how? ......................................................................................................................................... 8. you / how / drink / do / day / every / water / much? ......................................................................................................................................... 9. bottles / five / water / of / a / drink / day / I. ......................................................................................................................................... 10. are / seasons / there / in / four / country / my. ......................................................................................................................................... 11. autumn / what’s / Hai Phong / like / in? ......................................................................................................................................... 12. usually / dry / it’s / cool / and. ......................................................................................................................................... 13. will / what / like / weather / be / the / tomorrow? .........................................................................................................................................