Cho tam giác ABC vuông tại A có AB = 5cm , AC = 12cm . Kẻ đường cao AH ( H thuộc BC).
a) Tính độ dài cạnh BC
b) Tia phân giác của góc HAC cắt cạnh BC tại D. Qua D kẻ DK vuông góc với AC ( K thuộc AC ). Chứng minh tam giác AHD = tam giác AKD
c) Chứng minh tam giác BAD cân
d) Tia phân giác của góc BAH cắt BC tại E. Chứng minh AB + AC = BC + DE
Complete sentences with "less" or "fewer"
1. There are_________windows in our classroom than in her one
2 . We need_______glue to fix this vase than to fix that vase
3 There are ______restaurants in King street than in Queen street
4 My father drinks ____________water than my mother drinks every morning
5 My mother has prepared__________bread than fruit
6 I bought__________________mineral water than fruit juice
7 Lily does ________________exercises than Peter
8 Class 4A has ______________students than class 4B
9 There is________beer than wine
10 There are____________seats than the number of guests, so some guests will have to stand
Complete sentences with personal pronouns, possessive adjectives or prossessive pronouns
1 Vicky and Fiona never phone Ann, but ____________________always phones_________
2 We study English, these English books are_______, but those Spanish books are Sinead's,________studies Spanish
3 Gordan likes Jenny, but he doesn't like________family and ____________________don't like________________________
4 Lizzy has a toy. That toy is _________.It's _____________toy. Give it to______________
5 Hey ! That isn't your bike , it's ________________________ . _____________________is over there.
6 Susan has got two dogs. She loves_____________and they love________________too
7 My cat eats a lot. _______________plate is always empty
8 Tom's sister has a got car. ___________________drivers________________car to work, and if Tom is late for school,____________________drivers ________________there
9 We gave Peter and Modly__________________address , and they gave__________________
10 Nick and I have a friend in Dublin.______________name is Paul. We visit _______________every year, and he visits___________________sometimes
Complete the sentences so that it has similar meaning to the first sentence
1 These are our pictures = These pictures______________________________________________
2 It is Julia's thirteenth birthday next Friday = Julia______________________________________
3 Is your motorbike black, Peter ? = Is the__________________________________________
4 That is not his invention = That invention_______________________________
5 That predict a 10% car price increase = They predict that_______________________________
Choose the best options to complete the following sentences .
1. "_________" is a type of high-speed train which originated in Japan
A. Hover scooter B. Bullet train C.skycycling
2. We just wear_________on our back and we can fly
A. a skytrain B. a teleporter C. a jetpack
3."___________" is an underground train system, especially the one in Paris
A. Metro B.Monowheel C. Skytrain
4. "______________" has one wheel and is very easy to fall
A. Monowheel B. Hover scooter C. Sky safety system
5. "_________" is a type of transport that doesn't need any wheels or railways
A.Skycyling B. Flying car C. Teleporter
Choose the best option to complete each sentences
1 My friend has a 3-year-old brother. The boy in picture is.......................younger brother
A. her B. hers C. she
2 ...................................... is described as a solar-powered car with 2 wings
A. Its B . It C It's
3 A: What's wrong with him ?
B: He has broken............................arm
A. him B his C he
4 ....................................bus is here ,...............................will you come in 5 minutes
A . Mine/yours B. Mine/your C. My/yours
5 Is this car................?
A.theirs B their C. A and B are correct
^. The ideas of the future plane are all.........................../?
A ours B our C us
5 I