cho 1ml etanol vào ống nghiệm, nhỏ từ từ từng giọt 2ml H2So4 đậm đặc vào ống nghiệm sau đó đun nóng ống nghiệm l. quan sát hiện tượng và rút ra nhận xét

I. Tìm từ có phần gạch chân phát âm khác so với những từ còn lại. (1.25 điểm) 1.A. car B. park C. warm D. farm 2.A. kind B. mind C. tired D. city 3.A. village B. go C. game D. gift 4.A. home B. money C. old D. nose 5.A. empty B. novel C. reference D. left II. Chọn đáp án đúng để điền vào chỗ trống. (2.75 điểm) 1.___________ does Lan have her science classes? A. When B. Why C. How long D. What 2.History is ___________ interesting and important subject. A. a B. an C. the D. Ø 3.Children should ___________ to bed early. A. go B. goes C. going D. to go 4.Lan ___________ reading books. A. am B. is C. are D. does 5.___________ don't you come to my house? - OK. Let's go. A. What B. How about C. Why D. Let's 6.Blindman's bluff is a ___________ A. exercise B. game C. example D. sport 7.___________ are you doing? A. What B. When C. Who D. Whose 8.Would you like ___________ badminton? A. play B. plays C. to play D. playing 9.Does Nam play marbles ___________ recess? A. in B. on C. at D. of 10.Mai learns ___________ to use computer. A. how B. when C. what D. which 11.___________ a beautiful day! A. How B. What C. What is D. How much 12.Come in and ___________ a seat. A. have B. give C. do D. make 13.What is ___________ the picture? A. on B. in C. at D. between 14.Tell me ___________ your family, Hoa. A. of B. for C. about D. with 15.You can find a book with either the author ___________ the title. A. and B. or C. if D. nor

một hình chữ nhật có chu vi là 150m, nếu giảm chiều dài đi 15m và tăng chiều rộng thêm 5m thì chiều rộng bằng 2/3 chiều dài. Tìm chiều dài chiều rộng hình chữ nhật ban đầu

Sử dụng các từ đã cho để điền vào chỗ trống trong đoạn văn sau. (2.2 điểm) (children has help important interesting learn libraries problems see use) Books play a very (1) …..………. part in your life. It’s true that every family (2)………….books. We can (3) …………..books everywhere. We can (4)……..…. many things from books. Books (5) ……………..us in self-education and deciding (6) ………….in life. Today, there are a lot of public (7) ……….in our country and all people have the right to (8) ……..……....them. Each year hundreds of new books for (9) ………....appear in Viet Nam. The books are very (10) …………..and children like reading them very much. V. Em hãy đọc đoạn văn sau rồi xác định những câu sau là đúng (T) hay sai (F). (1.8) The Vietnamese students take part in different after-school activities. Some students play sports. They often play soccer, table tennis or badminton. Sometimes they go swimming in the swimming pools. Some students like music, drama movies. They often practice playing musical instruments in the school music room. They join in the school theatre group and usually rehearse plays. Some are members of the stamp collector’s club. They often get together and talk about their stamps. A few students stay at home and play video games or computer games. Most of them enjoy their activities after school hours. 1.Students in Viet Nam take part in different after-school activities. 2.They usually go swimming in the swimming pools. 3.Some students often practice playing musical instruments in the art club. 4.They join in the school theater group. 5.Vietnamese students enjoy their activities after school. 6.Many students play games or computer games. VI. Sắp xếp từ thành câu có nghĩa. (1.5 điểm) 1.at / the library / English / of / books / in / the back / are / those / . 2.the bell / into / the students/ ten / and / go / past / rings / all / the yard / half / at / . 3.play / the / is / room / the guitar / Ba / in / learning / to / . 4.dinner / like / come / would / to my house / you / to / for / ?

Viết đoạn văn khoảng 10 ..12 câu trình bày cảm nhận của em về cảnh Cô Tô sau trận bão trong đó có sử dụng 1 phép nhân hóa .Hãy gạch chân và chỉ rõ . Giúp mik vs nhóa🥺🥺🥺

Sử dụng các từ đã cho để điền vào chỗ trống trong đoạn văn sau. (2.2 điểm) (children has help important interesting learn libraries problems see use) Books play a very (1) …..………. part in your life. It’s true that every family (2)………….books. We can (3) …………..books everywhere. We can (4)……..…. many things from books. Books (5) ……………..us in self-education and deciding (6) ………….in life. Today, there are a lot of public (7) ……….in our country and all people have the right to (8) ……..……....them. Each year hundreds of new books for (9) ………....appear in Viet Nam. The books are very (10) …………..and children like reading them very much. V. Em hãy đọc đoạn văn sau rồi xác định những câu sau là đúng (T) hay sai (F). (1.8) The Vietnamese students take part in different after-school activities. Some students play sports. They often play soccer, table tennis or badminton. Sometimes they go swimming in the swimming pools. Some students like music, drama movies. They often practice playing musical instruments in the school music room. They join in the school theatre group and usually rehearse plays. Some are members of the stamp collector’s club. They often get together and talk about their stamps. A few students stay at home and play video games or computer games. Most of them enjoy their activities after school hours. 1.Students in Viet Nam take part in different after-school activities. 2.They usually go swimming in the swimming pools. 3.Some students often practice playing musical instruments in the art club. 4.They join in the school theater group. 5.Vietnamese students enjoy their activities after school. 6.Many students play games or computer games. VI. Sắp xếp từ thành câu có nghĩa. (1.5 điểm) 1.at / the library / English / of / books / in / the back / are / those / . 2.the bell / into / the students/ ten / and / go / past / rings / all / the yard / half / at / . 3.play / the / is / room / the guitar / Ba / in / learning / to / . 4.dinner / like / come / would / to my house / you / to / for / ?

Từ M ngoài (O,R) vẽ các tiếp tuyến MA,MB và cát tuyến MCD (C nằm giữa D,M). Gọi H là trung điểm của CD, MO cắt AB tại K.CMR: A) 5 điểm M,A,O,H,B cùng thuộc 1 đường tròn B) MA^2=MC.MD=MO.MK C) Kéo dài AH cắt (O,R) ở E. Chứng minh tứ giác CDEB là hình thang cân

Cho 5,6g hỗn hợp Mg, Zn, Al tác dụng với 100g dung dịch HCl 25,55% . Hỗn hợp kim loại có bị hoà tan hết không? Vì sao?

Cho A= $\frac{196}{197}$ + $\frac{197}{198}$ ; B= $\frac{196+197}{197+198}$. Trong hai số A và B số nào lớn hơn?( giải thích)

Trình bày cấu tạo của đại não ? Giúp mik vs mik đang cần gấp 🥺