An0441

05.06.2021 18:55 •  Английский язык

6 Complete the text with the past simple affirmative, negative or question forms of the verbs in brackets. Louis Pasteur 1822-1895
As a young man, Pasteur a studied
at the École Normale in Paris. Then at the age of just 32,
he b (become)
a professor at the University of Lille. In 1856, Pasteur c (receive)
a visit from a man called Bigo who d (own)
a factory that
e (make)
alcohol from sugar beet. He f (have)
a question for
Pasteur: why g (the alcohol / turn/ to acid?)
? When this
h (happen)
they i (not can)
use it and ] (throw)
it away. Bigo k (ask)
Pasteur to find out the reason for this.
At first, Pasteur ! (not know)
but when he m (examine)
the alcohol under a microscope, he n (find)
thousands of tiny micro-organisms. He o (believe).
that they
p (cause)
the problem. q (milk, wine and vinegar / behave /
in the same way?)
2
Other scientists r (disagree)
with him, and newspapers
s (make)
fun of him. However, Pasteur t (continue)
with his work, he u (invent)
methods of testing his theory and v (prove)
that he was right. Later he w (work)
together with two
doctors and x (develop)
vaccines for diseases such as