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Hi 
I made some sentences, but I am not sure whether they are right or not.
If you find something wrong in Grammar or vocabulary, help me check them.
Thank you very much.
1.Technological innovations are aimed at improving all aspects 
of people’s lives or lifes.    I am not sure.
 
2. Doctors can take advantage of these technological 
innovations to cure a range of diseases such as cancers, 
heart disease, stroke, diabetes that were regarded lethal 
ones in ancient times. 
 
3. Whether a nation can stimulate economic development 
is dependent on how developed its technological advancement is. 
 
4. It through the use of the Internet that people 
can enhance the depth of their knowledge. 
 
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I'll give it a try:

1.Technological innovations are aimed at improving all aspects


of people’s lives or lifes. I am not sure.lives




2. Doctors can take advantage of these technological


innovations to cure a range of diseases such as cancer(s),


heart disease, stroke, diabetes, which that were regarded as lethal


(ones) in ancient times (only) a few years ago.




3. Whether a nation can stimulate (its?) economic development


is dependent depends on how developed its technological advancement is.




4. It is through the use of the Internet that people


can enhance the depth of their knowledge I'm not sure you can enhance a depth...

"People can widen their knowledge through the use of internet" ?

Comments  
Bsss10
Hi 
I made some sentences, but I am not sure whether they are right or not.
If you find something wrong in Grammar or vocabulary, help me check them.
Thank you very much.
1.Technological innovations are aimed at improving all aspects 
of people’s lives or lifes.    I am not sure.
 
2. Doctors can take advantage of these technological 
innovations to cure a range of diseases such as cancers, 
heart disease, stroke, diabetes which were regarded lethal
ones in ancient times. 
 
3. Whether a nation can stimulate it's economic development 
is dependent on how developed its technological advancement is. 
 
4. It through the use of the Internet that people 
can enhance the depth of their knowledge. 


If you don't mind, I took the liberty to revise your sentense to improve the fluency.
1.Technological innovations are aimed at improving all aspects of
 people’s lives 
2. Doctors can take advantage of these technological 
 innovations to cure a range of diseases such as cancers, 
 heart disease, stroke, diabetes which were regarded [as incurable] lethal 
 ones in ancient times only few years ago.
3. Whether a nation can stimulate it's economic [growth] development 
  is dependent on how developed its technological advancement is. 
 
4. It through the use of the Internet that people 
 can [increase] enhance the depth of their knowledge.