Tính bằng cách thuận tiện nhất 7,42 x 12,4 - 1,4 x 7,42 - 7,42

Giải giúp mình bài 3 . Câu b . Vẽ hình nữa ạ .

4 + 4 + 4 + 4 + + 4 + 4 ----- ----- ----- ------ ........... ---------- ---------- 2x4 4x6 6x8 8x10 16x18 18x 20

Từ Câu 10 bài 4 đến hết bài 5 ạ. E cảm one

tính số gam chất tan có trong các dung dịch sau a 500 ml dung dịch nacl 0,5 mol b 200 g dung dịch cuso4 10% c) 250 ml dung dịch naoh 1m

he (phone) _____ her four times, but she never answers.

Tóm tắt những việc làm của Khúc Hạo, những việc làm của Khúc Hạo nhằm mục đích gì ?

Khoanh tròn một từ ở phần gạch chân có cách phát âm khác các từ còn lại 1.A.grind B.kind C.printer D. find. 2.A. nature B.future C.picture D.victim 3.A.stream B. measure C. steam D. team 4.A. why B. try C.many D. fry

cho những chất có công thúc hóa học như sau:KOH,CuCl2,Al2O3,ZnSO4,CuO,ZN(OH)2, H3PO4 HNO3. Hãy cho biết mỗi chất trên thuộc loại hợp chất nào

Xả điểm : 1.My tooth doesn’t stop hurting. I’ll go and see the …………. A. doctor B. teacher C. dentist D. actor 2. I had a …………. evening. Every thing went wrong. A. terrific B. terrible C. terrified D. terrifying 3. Mr. Robinson speaks Vietnamese very ……………… A. skillfully B. good C. fluently D. best 4. My sister doesn’t want to drink coffee and …………. A. I do either B. I do , too C. So do I D. Neither do I 5. Of the two students , he is ………………… A. tall B. taller C. the taller D. the tallest 6. You had better ………. fast or you’ll miss the bus. A. to run B. run C. running D. ran 7. Would you like some corn? ………………… A. Yes, please B. Here it is C. Ok ,I’ll have some D. Here you are 8. I live …………. 58 Tran Hung Dao Street. A. in B. on C. to D. at 9. She looked very ………when I told her the news. A. happy B. happily C. happier D. happiness 10. His brother prefer detective stories ………science fictions. A. than B. to C. from D. as 11. How long did the meeting …………….? A. last B. take C. lose D. go 12. I’ll phone……….. when I got home. A. to her B. for her C. her D. hers 13. My classmate, Oanh likes collecting things. She has a good ……of coins. A.collector B. collect C. collection D. collective 14. People in the city seem to be………because they are too ………. A. busy/ unfriendly B. friendly/ busy C. unfriendly/ busy D.busier/ unfriendly 15. John is looking ……….. an apartment in Hanoi for his penpal friend. A. at B. after C.for D. forward 16 .Children must take…………. in outdoor activities. A. place B. role C. care D. part 17. What is………….. the picture? A. in B. on C. of D. next 18. He is one of ………… player in the team. A. better B. well C. the best D. good 19. I went to the…………….. to buy some medicine for my mother. A. drugstore B. cafeteria C. grocer’s D. market 20. My sister had a baby daughter yesterday and she is my first ………….. A. newphew B. cousin C. relation D. niece