2020高考英語復習Warming Up, Pre-reading and Reading

unit 1 great scientists
warming up, pre-reading and reading
1.teaching aims
①get ss to improve their reading abilities.
②let ss know the topic “great scientists”
③know some important phrases occurring in this reading
2.teaching procedures
step 1 lead in
check ss’ knowledge about some scientists and their discoveries.
①who discovered that objects in water are lifted up by a force that helps them float?
archimedes
②who wrote a book explaining how animals and plants developed as the environment changed?
charles darwin
③who invented the first steam engine?
thomas newcomen
④who used peas to show how physical characteristics are passed form parents to their children?  
gregor mendel
⑤who discovered radium?
maries curie
⑥who invented the way of giving electricity to everybody in large cities?
thomas edison
⑦who was the painter that studied dead bodies to improve his painting of people?
leonardo da vinci
⑧who invented a lamp to keep miner safe underground?
sir humphrey davy
⑨who invented the earliest instrument to tell people where earthquakes happened?
zhang heng
⑩who put forward a theory about black holes?
stephen hawking
after all the questions, then lead in the passage with a picture. ask ss if they know the map and what it is used for. give them the answer later “it is a map to find out the cause of cholera. ”

step 2 skim and scan
more questions are given to get the general ideas of this passage and some obvious facts.
who defeats “king cholera“? john snow
what happened in 1854?   cholera outbreak hit london.
how many people died in 10 days? 500
why is there no death at no. 20 and 21 broad street as well as at no. 8 and 9 cambridge street?
 these families had not drunk the water from the broad street pump.
step 3 reading for details
1 why couldn’t the cholera be under control at first?
neither its cause, not its cure was understood.
2 which theory did john snow believe in?
people absorbed cholera into their bodies with their meals.
3 john snow finally proved the theory he believed by ________.
gathering information with the help of a map
looking into the source of the water for broad street and cambridge street
separating those who suffered cholera from those who didn’t
both a and b (right choice)
4 to prevent the cholera from spreading again, what did john snow do?
suggested that the source of all water supplies be examine. suggested that new methods of dealing with polluted water be found. instructed the water companies not to expose people to the polluted water anymore.