Câu 5.Cho hình thang ABCD, có 2 đáy là AB và CD. Biết chiều cao là 14cm. Hai đường chéo AC và BD cắt nhau tại E. AB = 15cm, CD= 20cm , Tính diện tích hình thang ABCD.

a.        Tính diện tích tam giác CED.

b.        Chứng minh 2 tam giác AED và BEC có diện tích bằng nhau.

CHO NHỮNG TỪ SAU :

are going to feel

are likely to lead to

will have

will find

is likely to become

will develop

are predicted to work

are likely to occur

will be

will continue

are going to happen

will result

ĐIỀN TỪ ĐÃ CHO VÀO CHỖ TRỐNG :

Thanks to modern technology, there have been enormous

changes in the workplace over the past 100 years.

So now let us consider the changes that (1) __________ in the

next 100 years. Unfortunately, I believe that not all changes

(2) __________ for the better. For example, more people (3)

__________ from home and so they (4) __________ more isolated from their colleagues. On the other hand they (5) __________

greater freedom to choose their working hours.

A further possible change is that handwriting (6) __________ obsolete. We are already so used to using a keyboard that today’s

children are losing the ability to spell without the aid of a word

processor.

Without a doubt, even greater changes (7) __________ in technology used in the workplace. Computers (8) __________ to grow even more powerful and this (9) __________ in an even faster pace of

life than we have now. Let us hope that our employers (10) __________ way to reduce the stress on

worker’s this fast pace can bring.

I also think these improvements in technology (11) __________ even more globalization than now

and companies (12) __________ very strong international links.

GIÚP MÌNH ĐI ;-;