听力音频：
L1
讲座
1. What is the lecture mainly about?
How crustaceans compete for food in the deep sea
A comparison of two recently discovered sea animals
Reproductive adaptations in deep-sea animals
Ways in which shallow ocean habitats are changing
2. Why does the professor mention the Caribbean Sea?
To identify the body of water with the world’s greatest number of deep sea animals
To suggest that the temperature of its deepest waters has not changed for millions of years
To provide an example of an area that has a wide range of temperature and pressure zones
To signal hat she is changing the focus of he lecture from freshwater to saltwater organisms
3. Why does the professor discuss frozen meat?
To contrast average land temperatures with average sea temperatures
To compare the effects of high pressure on land and sea animals
To show the link between a cell’s size and its flexibility
To illustrate the effect that deep sea conditions have on biological processes
4. What does the professor say about eggs of squat lobsters that live in the deep
seas?
The eggs are produced multiple times throughout the year.
The eggs are larger than those produced at shallower depths.
The eggs are main source of energy for several types of sea animals.
The eggs are produced in relatively small quantities.
5. What does the professor emphasize about the special oil inside copepod eggs?
It allows the eggs to move upward through the water
It reduces the growth rate of larvae before they hatch.
It is produced by a complex structure inside the reproductive system.
It is present in both freshwater and saltwater copepod eggs.
6. Why does the professor say this:
To point out a characteristic that is present in all marine animals
To imply that there are questions that need to be researched
To signal that the process she is describing is difficult to understand
To introduce disadvantage to the process being described
