tìm câu ghép trong bài ôn dịch thuốc lá

cơ quan nào nằm giữa thực quản và tá tràng

cho hình bình hành ABCD có BC=2AB và góc A =60 độ. Gọi EF theo thứ tự là trung điểm của BC,AD a) tứ giác ECDF là hình j? vì sao? b)tứ giác ABED là hình j?vì sao? c)tính số đo của AED giúp mik với!mik đang cần gấp

Các tránh mụn ,trứng cá ở tuôỉ dậy thì

20 điểm 2x²-x+x+1+2-x² Ai chỉ em cách cộng đi ạ

Tứ diện ABCD có E, F lần lượt là trung điểm của BC, CD. a) Tìm giao tuyến (ABF) giao (ADE)=? b) Gọi M thuộc (ACD), (ABD) giao (BCM)=? Ai biết làm giải giúp mình vs ạ

Cho 1/a + 1/b + 1/c=1/a+b+c CMR 1/a^2017 + 1/b^2017 + 1/c^2017 = 1/a^2017+b^2017+c^2017 Giúp mk vs <3 .

Giúp mk câu c bài 5 vs mk cảm ơn

Giúp mik làm câu 16,17,18 và bài 1 với jk Hứa vote 5

1) every thing is going well. We .....any problems so far A) haven't had B) hasn't had C) haven't D) Hasn't 2) ....you .....from George recently A) has/ heard B)did/ heard C)_have/ heard D) have/ hear 3I am tired. I ....... Since breakfast A) am working B) work C) will work D) have been working 4) It hasn't rained........ A) last night B) today C) a month ago D) yesterday 5) have you hear from john ... A) recently B) for two days C) two days ago D) since two days 6) he hasn't driven a car.... A) since June B)ready C) two years ago D) yesterday morning 7) that is the third time he's phoned her..... A) last night B) for two hours C) yesterday D) this evening 8)Life .....on another planets A) might found B) might find C) might be find D) might be found 9) Hong hanh is a famous fashion..... A) writer B) poet C) musican D) designer 10)the design and material used ....men and were different.... Those used for woman A) for/ from B) for/ to C) from/ for D) by / on 11)mr hoa prefer reading novels.... Watching films A)than B)to C) for D) by 12) she describes herself.... A fashion designer A) as B) by C) in D) from 13)many designer have taken....from Vietnam ethnic minorities A) inspirate B) inspiration C)inspirated D) insprational 14) in the 1990s the sale of jeans stopped.... A) grow B) to grow C) grown D) growing 15) jeans have never been ....fashion A) in to B) out to C) out of D) wear out 16) wearing uniforms encourages students to be proud.... Their school A) of B) on C) in D) off 17) wearing uniform makes students..... Self-confident A) feel B) to feel C) feeling D) felt 18)have you eaten vegetarian.... A) for B) before C) ago D) yet 19) jean cloth was.... Made from cotton A) complete B) completely C) completed D) completing 20) a new style of jeans... In Australia A) have just been introduced B) just has been introduced C)_has just been introduced D) has just introduced