[简答题]介绍midden fish hooks are made of fish bones

[填空题]What may the fish the fisherman catches be made into
The fish is made into （）.

[单项选择] Fish Oil Much has been made of the benefits of oil derived from fish. It is claimed that people with a diet rich in fish oil have a greatly reduced chance of heart disease and arteriosclerosis. In addition, it has been shown conclusively that people suffering from elevated blood lipids react positively to treatment using fish oils. limits’’ Diet and Diseases The advantages of fish oil became apparent after studies some two decades ago of the diet of the Inuit, or Erkimo, populations of Greenland. It was found that the Inuit, with their traditional diet of seal, whale and Arctic fish — a diet very high in fat — suffered practically no heart disease, had near zero incidence of diabetes, and enjoyed a comparatively low rate of rheumatoid arthritis. (Interestingly, incidence of cancer, equal to that found in most other parts of the world, appeared unaffected by the traditional Inuit diet.) Few Heart Attack Deaths Until the wo
A. Y
B. N
C. NG

[单项选择]Why does the professor mention bones and shells ？（）
A. To give an example of natural shapes.
B. To describe early sculpture.
C. To illustrate their use as tools.
D. To demonstrate their role as decorative objects.

[简答题]利用两组乌龟进行对比试验bones are weak

[单项选择] My bones have been aching again, as they often do in humid weather. They ache like history: things long done with, that still remain as pain. When the ache is bad enough it keeps me from sleeping. Every night I yearn for sleep, I strive for it; yet it flutters on ahead of me like a curtain. There are sleeping pills, of course, but the doctor has warned me against them. Last night, after what seemed hours of damp turmoil, I got up and crept slipperless down the stairs, feeling my way in the faint street light that came through the window. Once safely arrived at the bottom, I walked into the kitchen and looked around in the refrigerator. There was nothing much I wanted to eat: the remains of a bunch of celery, a blue-tinged heel of bread, a lemon going soft. I’’ve fallen into the habits of the solitary; my meals are snatched and random. Furtive snacks, furtive treats and picnics. I made do with some peanut butter, scooped directly from the jar with a forefinger: why dirty a spoo
A. the house was too dark at night.
B. there were unfamiliar rooms in the house.
C. she felt much more lonely at night.
D. the furniture there didn’’t belong to her.