Read the text. Then choose the correct answer for questions 31-32

Read the text. Then choose the correct answer for questions 35-36.

As a scientist Leonardo Da Vinci towered above all his contemporaries. His scientific theories, like his artistic innovations, were based on careful observation and precise documentation. He understood, better than anyone of his century or the next, the importance of precise scientific observation. Unfortunately, just as he frequently failed to bring to conclusion artistic projects, he never completed his planned treatises on a variety of scientific subjects. His theories are contained in numerous notebooks, most of which were written in mirror script. Because they were not easily understandable, Leonardo's findings were not disseminated in his own lifetime; had they been published, they would have revolutionized the science of the 16^th century.

35.Which of the following statements is true about Leonardo?

A) Most of his findings were well accepted by his colleagues.

B)None had any difficulty in understanding his theories.

C)He managed to finish all his scientific projects.

D)He was very methodical in his scientific studies.
36.Leonardo’s findings were not known during his lifetime because ...

1. 
   his notebooks were lost.
   
2. 
   he used secret characters.
   
3. 
   they were too impractical.
   
4. 
   he didn't write them down.
   

26-variant