1 hasn't met - left

2 will be built

3 has lived

4 are sold

5 have broken

what cái cũng đc đăng á 

HOHI

a: Xét ΔDEI và ΔDFI có 

DE=DF

DI chung

IE=IF

Do đó: ΔDEI=ΔDFI

b: Ta có: ΔDEI=ΔDFI

nên 

mà 

nên 

Thu gọn

It seems entirely (physical / natural /typical /real) to us that there are teams of scientists in universities and other institutions around the world, attempting to (create / invent / construct / discover) the way the world works.However, it hasn’t always been that (route /method / way / technique). Although the scientific method is now four or five hundred years old, the ancient Greeks, for example, believed that they could work out the (aims / reason / causes/ impulses) of natural events just by the power of thought. During the 17^th century, more and more people began to realize that they could (calculate / estimate / measure / test) their scientific ideas by designing relevant (experiment / research / attempt / analysis) and seeing what happened. A lot of (development / movement / progress / evolution) was made in this way by individual scientists. These men and women often worked alone. Carrying out (research / experiment / discovery/ education) into many different areas of science, and they often received very little (award / prize / gift / reward) for their hard work. At the start of the 20^th century, though, it became (clear / true / accurate / actual) that science was becoming more complicated and more expensive. The individual scientist disappeared, to be replaced by highly qualified teams of experts. Modern science was born.

Tại sao người B đứng trên mặt đất ở nửa mặt cầu bên

kia trái đất só với người A lại không bị rơi ra khỏi trái đất vì có lục hút của trai đất nên sẽ ko rơi

1. Công cha như núi Thái Sơn, 

Nghĩa mẹ như nước trong nguồn chảy ra.

Một lòng thờ mẹ kính cha,

Cho tròn chữ hiếu mới là đạo con.

2. Chim trời ai dễ đếm lông

Nuôi con ai dễ kể công tháng ngày.

3. Gió mùa thu mẹ ru con ngủ

Năm canh chày mẹ thức đủ năm canh.

4. Anh em thuận hòa là nhà có phúc.

5. Máu chảy, ruột mềm.

Have you lived here ... life 

a) your all 

b) all the 

c) the whole 

d) all your

1 more crowded and more tranquil

2 faster

3 easily

1 D

2 D

3 A

4 B

5 A

6 C

7 B

8 C

9 D

10 A

1 If there were a library in my neighborhood, I could borrow book

2 If my health were good, I would play extreme sports

3 If it weren't pouring with rain, we could go for a picnic

4 If I had much free time, I could come to your party

5 If Jim had some siblings, he wouldn't feel lonely

6 If my father weren't very busy at work, he would have time for me

7 If this camera weren't expensive, I could buy it