HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
hóa lớp mấy đây mà khó quá trời zậy anh . em làm được mỗi 4 câu ak
bài 1 ta có :
\(AC=AH+HC=6+4=10cm\)
Vì ΔABC cân tại A nên AB=AC=10cm
Vì ΔABH vuông tại H
\(\Rightarrow AB^2=AH^2+BH^2\)
\(\Rightarrow10^2=6^2+BH^2\)
\(\Rightarrow BH=8cm\)
Vì ΔBHC vuông tại H
\(\Rightarrow BC^2=BH^2+CH^2\)
\(\Rightarrow BC^2=8^2+4^2\)
\(\Rightarrow BC=4\sqrt{5}cm\)
1.who you visit when you are in Ho Chi Minh?
2.. What does my sister do in elementary school?
3.How much fruit do they produce?
4.Why don't they like going by bike?
5.Who does Sky buy hats for in Nha Trang?
6. How long do you spend reading in the library?
7.did you get tired last night?
8. What time do he get up this morning?
9.where did you spend the summer vacation?
10.. What should a child do after a meal?
1.longer
2. older
3. bigger
4. higher
5. more difficult
6. faster
7. colder
8. more intelligent
1. I don’t watch news. It is boring. (because)
… I don’t watch news because It is boring.………….
2. She is seeing a movie at cinema. The film is terrifying. (but)
…… She is seeing a movie at cinema but the film is terrifying.……………………
3. The programme is boring. The programme is boring. (and)
……The programme and The MC are boring…………………………
4. I have a lot of homework tonight. I can’t watch Eight Feet Below. (so)
………I have a lot of homework tonight.so I can’t watch Eight Feet Below.……….
5. BBC The Coast is a famous TV series. I have never watched it. (although)
BBC The Coast is a famous TV series although I have never watched it
weight -> weighted
1.Pat(go)goes there twice a week
2.They(do)do housework everyday
3.Mary(play)plays the piano very well
4.She(do)does all the work
5.She(read)reads a newspaper everyday
6.I always(walk)walk to school
7.The boys often(go)go swimming with his father
8.I(speak) speak .two languages
fill-> filled
leave-> left
take-> took-> taken