Two types of fossils:
Body fossils, like 2…………….teeth and shells
3…………………..,e.g. tracks, burrows, and droppings.
Fossilization
Not all organisms can be preserved as fossils without a favorable condition.
雅思课堂听力练习3
Exercise 1
No more than three words and/or a number for each answer.
Blue Whale
Type: mammal
Weight: up to1……………….
Food: 2…………………
Skin colour: surface---- blue-gray
Architecture aims to provide a safe and healthy environment for people to live and 3………………
The three main principles of architecture are function, 4……………and 5……………..
Step 1: Wrap fossil
Wrap it first in wet paper towels or toilet paper and than in newspaper. While this wrapping dries, apply mix to the fossil.
Step 2: Clean fossil
Need tools like 8…………….., chisels and drills---all wielded with the extremely care.
Step 3: Secure broken pieces of fossils with an adhesive.
Caution: apply adhesive only on 9……………..and………………fossils.
Architectural style is determined by physical and mental state of the people 6……………………, 7………………………and climate change.
Write the correct letter A-F next to questions 8-10
Exercise 2
Write no more than three words for each answer.
Caves provided shelter from danger animals and 1…………………
Over the centuries, buildings became more practical as well as 2………………..
Step 4: Store fossils in a dry location.
Step 5: limit dust
Method: filter air system
Keep windows and doors closed
Open shelves should be protected by 10……………..
Underbelly--- yellow because 源自f massive 3……………..
Habits of blue whale: spend summer in polar waters and 4……………..in winter
Maximum speed:5…………..an hour
They have to return to the ocean 6……………..to get a breath.
Fossilization depends on two factors:
Hard parts are prone to be fossilized than 4………………
Remains which are buries by 5………………….quickly are more likely to be fossilized
Write no more than three words and/or a number for each answer.
Fossil Preservation
What is a fossil?
Definition: Evidence of 1…………..and…………….lived in the ancient time.
Hardly any windows open 8……………….
House with flat roofs 9……………..
Many arches used 10…………………….
A Greese
B Egypt
C Sweden
D Switzerland
E Vietnam
F Roman
Exercise 3
A baby blue whale is fed by mother’s milk and gains 7……………..kilograms every day.
Many blue whales are injured or die from impacts with 9…………..
Classification:10……………………..
Why are fossils important?
Detect the 6……………..of rocks.
Match rock units with various places.
Predict 7……………….where fossilized plants or animals lived.
Steps of preservation