Câu 1:cho các base bao gồm NaOH ,Cu(OH)2 ,Fe(OH)3 A.chất nào làm đổi màu quỳ tím và phenol phtalein ? B.chất nào tác dụng đc vs khí CO2 và SO2 ? C.chất nào tác dụng đc vs dung dịch H2SO4? D.chất nào bị nhiệt phân hủy ? Viết các PTHH xảy ra( ghi rõ điều kiện nếu có) Caau2:có 3 lọ mất nhãn gồm các dung dịch ko màu: NAOH,Ba(OH)2,HCl.em hãy nêu phương trình hóa học để nhận bt riêng từng chất trên .viết PTHC minh họa Câu 3: cho 100ml dung dịch NaOH 1M tác dụng hết vs dung dịch CuSO4 2M.Sau phản ứng thu đc chất kết tủa màu xanh A: tính thể tích dung dịch CuSO4 2M đã dùng B.lọc lấy kết tủa xanh , sấy khô r đem nung đến khối lượng ko đổi thì thu đc m gam chất rắng màu đen. Tính giá trị m ( cho Cu=64,O= 16) Giúp mình nha mình đánh giá 5 sao

I.  MULTIPLE CHOICE (8.0 points)

Mark the letter A, B, C, or D to indicate the word whose underlined part is pronounced differently front that of the rest in each of the following questions.

1. A. oceanic    B. remote    C. occasion    D. metro

2. A. festival    B. cultural    C. sculpture    D. virtual

Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

3. A. external    B. determine    C. mysterious    D. customer

4. A. miraculous    B. individual    C. certificate    D. astronomy

Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.

5. Now that the stress of examinations are over, we can go somewhere for our holiday.

                     A                     B                     C                     D

6. The English summer course will start in May 29th and finish in August.

                     A                     B                     C                     D

7. There were so a lot of people trying to leave the burning building that the police

             A                B             C

had a great deal of trouble controlling them.

                   D

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

8. The earthworm is a worm _______in moist, warm soil in many geographical areas.

    A. where is it found       B. is found

    C. and found it               D. which is found

9. Our flight from Amsterdam to London was delayed    the heavy fog.

    A. as a result     B. on account     C. instead of     D. due to

10. It is_______ to translate each lesson into your language. This is not a good way to study English.

    A. productive     B. unproductive     C. producing     D. unproducing

11. A good clock always keeps_______ time.

    A. certain    B. accurate    C. true    D. serious

12. It seems that the world record for this event is almost impossible to_______.

    A. meet    B. compare    C. beat    D. balance

13. The soldier was punished for_______ to obey his commanding officer's order.

    A. refusing    B. regretting    C. objecting    D. resisting

14. It is believed that she'll be a billionaire by the time she_______ forty.

    A. is    B. was    C. will be    D. would be

15. Some of the passengers spoke to reporters about their_______ in the burning bus.

    A. occasion    B. happening    C. event    D. experience

16. _______the rise in unemployment, people still seem to be spending more.

    A. Nevertheless    B. Meanwhile    C. Despite    D. Although

Choose the best answer.

I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

Choose the best answer.

We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

Choose the best answer.

I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.