Cho \(\bigtriangleup{ABC} \) có hai góc nhọn B và C , BC = a , đường cao AH = h . Một hình vuông MNPQ nội tiếp \(\bigtriangleup\) sao cho : M \(\in\) BA , N \(\in \) AC , P và Q \(\in \) BC . Tính MP

Cho hình thang vuông ABCD ( \(\widehat{A} = \widehat{D} = 90 ^0\) ) ; E là trung điểm của AD và \(\widehat{BEC} = 90^0\) . Cho biết ED = 2a . CMR :

a, AB . CD = \(a^2\)

b, \(\bigtriangleup{EAB}\) tia tia phân giác của \(\widehat{ABC}\)

Cho \(\bigtriangleup{ABC}\) cân tại A , trên hai cạnh AB và AC lấy hai điểm M và N sao cho AM = AN .Chứng minh rằng :

a, Các hình chiếu của BM và CN trên BC bằng nhau .

b, \(BN > \dfrac{BC + MN }{2}\)

Give the correct form of the word in brackets to complete the following text .

The USDA recommends consuming 2 cups of fruit per day . The healthiest choices are fresh fruits or ( FREEZE ) _____ without added ( SWEET ) ______ . Fruit is ( NATURE ) _____ low in fat , sodium and calories , and rich in potassium , fiber , vitamin C and folate . Some hight - potassium fruits include peaches , cantaloupe , honeydew , oranges and bananas . Fiber in fruit helps to protect against heart disease and ( LOW ) _____ cholesterol . Vitamin C in foods like citrus and strawberries helps with wound ( HEAL ) _____ and keeps gums and teeth ( HEALTH ) _____ .

giúp mk vs , chiều mk cần rùi

Tìm lỗi sai và sửa :

She has read this book several time

Use the words given in the box to complete the following compound sentences .

1, Lucia liked Mike , _____ Mark also liked Mike .

2, I need to go to the supermarket , _____ I'm feeling too tired to drive .

3, She didn't do her homework , _____ her parents punished .

4, I have never visited Europe , _____ have I visited America .

5, You can make a big pizza , _____ you can make a small pancake .

6, John did not like speaking French , _____ he was not very good at it .

7, The little girl did not like to go to school , _____ she went anyway .

8, I don't want to sleep , _____ I don't want to go anywhere .

Read the following text and decide which answer best fits each numbered blank :

Healthy benefits of fruits guarantee you optimum healthy and a well - built body in the long run . Fruits benefit ______ body immensely as they are _______ sources of vitamin and minerals , which are essential for proper functioning of the body . Rich in dietary fiber , fruits also help _______ the functioning of the digestive tract . Fruits are an important _______ of a healthy diet for those who want to lose ________ ; they give ample anergy and nearly every nutrient that your body needs to curb weight gain , _______ adding any unnecessary fats .

Moreover , fruits help you to say _______ from healthy complications . Fruits ______ fight skin disorders and and promote healthy hair growth . It is always suggested _______ raw , fresh and ripe fruits because then you experience the real heath benefits , rather than consuming tham after _______ or cooking .

1, A. you B.your C.I D.my

2, A.natural B.naturally C.nature D.naturalize

3, A.improve B.to improve C.improves D.improved

4, A.thing B.item C.mark D.part

5, A.height B.age C.weight D.address

6, A.without B.with C.for D.of

7, A.in B.at C.away D.with

8, A.effect B.effected C.effective D.effectively

9, A.eat B.to eat C.eating D.eats

10, A.to process B.process C.processing D.processed

Read the text below and write one word in each blank to complete it .

SPORTS REDUCE STRESS AND DEPRESSION

When you are physically active , your mind is distracted from daily stressors . This can _______ you avoid getting bogged down by negative thoughts . Exercise reduces the ______ of stress hormones in your body . At the same time , it stimulates producation ______ endorphins . These are natural mood lifters that _____ keep stress and depression at bay . Endorphins may even leave you feeling _____ relaxed and optimistic after a hard workout . Experts agree that more quality research is needed todetermine the relationship _____ sports and depression .