Văn nghị luận chứng minh là gì? Văn miêu tả là gì? Văn giải thích là gì?

Cho X={x thuộc R|2x^2-x+1=0}, khảng định nào sau đây đúng: A. X=0 B. X={0} C. X= Ф D. X={Ф} ( Ф là rỗng)

vẽ mầm đậu vui. còn nữa..............

Cho B = 1/6 + 1/ 39 + 1/ 51 / 1/8 - 1/52 + 1 / 68 . Mik cần gấp * Lưu ý : Không chép mạng

Bài 1: Điền vào chỗ trống với đáp án phù hợp nhất 1. She is talking about the author ……….. book is one of the best-sellers this year. A. which B. whose C. that D. who 2. The children, ……….. parents are famous teachers, are taught well. A. that B. whom C. whose D. their 3. The exercises which we are doing ……….. very easy. A. is B. has been C. are D. was 4. Was Neil Armstrong the first person ……….. foot on the moon? A. set B. setting C. to set D. who was set 5. My mother, ……….. everyone admires, is a famous teacher. A. where B. whom C. which D. whose 6. He bought all the books ……….. are needed for the next exam. A. which B. what C. those D. who 7. Do you know the boy ……….. we met at the party last week? A. which B. whose C. who is D. whom 8. The man ……….. next to me kept talking during the film, ……….. really annoyed me. A. having sat / that B. sitting / which C. to sit / what D. sitting / who 9. This is the village in ……….. my family and I have lived for over 20 years. A. which B. that C. whom D. where 10. The old building ……….. is in front of my house fell down. A. of which B. which C. whose D. whom

các bạn giải giúp mình nha mình cảm ơn mình đang cần nữa

1. Jane was expected...............................(pass) the exam. 2. John really loves...............................(spend) all day at the beach. 3. Tom insisted on...............................(call) Tomy. 4. Are you waiting...............................(use) the phone? 5. expect.............................(meet) at the airport by my parents. 6. My teacher refused...............................(let) me leave early. 7. This letter is believed...............................(deliver) this afternoon. 8. I expected...............................(invite) to Nam’s birthday party, but I wasn’t. giúp em vs ạ, em cảm ơn

1.John cannot make a __ to get married to Mary or stay single until he can afford a house and a car. a. decide b. decision c. decisive d. decisively 2.My mother used to be a woman of great _______, but now she gets old and looks pale. a. beauty b. beautiful c. beautifullyd. beautify 3.Although they are twins, they have almost the same appearance but they are seldom in _____.a. agree b. agreeable c. agreement d. agreeably 4.The more _______ and positive you look, the better you will feel.a. confide b. confident c. confidently d. confidence Mn giúp mình với ạ chỉ cần ghi đáp án + giải thích (cách làm). Hứa cho 5* +ctrlhn

Bài 4: Chọn mệnh đề quan hệ phù hợp điền vào chỗ trống dưới đây: 1. The film about _____ they are talking about is fantastic. A. who B. which C. whom D. that 2. He is the boy _______ is my best friend. A. that B. whom C. who D. A& C 3. I live in a pleasant room ____________ the garden. A. to overlook B. overlooking C. overlooked D. which overlooking 4. The pilot was the only man _______ after the crash. A.was rescued B. rescued C. rescuing D. to be rescued 5. I’ll see you near the post office ___________ we met the other day. A. which B. where C. when D. why 6. The people ____ for the bus in the rain are getting well. A. waiting B. to wait C. waited D. wait 7. I have a message for people _____ by the traffic chaos. A. to delay B. who delay C. delayed D. who delaying 8. Melanie was the only person _____ a letter of thanks. A. wrote B. written C. to write D. writing 9. I met a lot of new people at the party ________ names I can’t remember. A. whose B. which C. who D. whom 10. Tell me the reason ______ you were absent yesterday. A. where B. when C. why D. that

tính giá trị của biểu thức giúp mình câu C nha ( 50 điểm )