[单项选择]When she was over fifty, the late nineteenth century mother ______.
A. would be healthy enough to take up paid employment
B. was usually expected to die fairly soon
C. would expect to work until she died
D. was unlikely to find a job even if she wanted one

[单项选择]When she was over fifty, the late nineteenth century mother ______.


A. would be healthy enough to take up paid employment
B. was usually expected to die fairly soon
C. would expect to work until she died
D. was unlikely to find a job even if she wanted one

[单项选择]When did she find she is seriously ill


A. Two years later.
B. Five years later.
C. Thirteen years later.

[单项选择]Unfortunately, when I arrived she （　）, so we only had time for a few words.
A. just left
B. has just left
C. was just leaving
D. had just left

[单项选择]

What does a scientist do when he or she "explains" something Scientific explanation comes in two forms: generalization and reduction. Most psychologists deal with generalization. They explain particular instances of behavior as examples of general laws. For instance most psychologists would explain a pathologically strong fear of dogs as an example of classical conditioning. Presumably, the person was frightened earlier in life by a dog. An unpleasant stimulus was paired with the sight of the animal (perhaps the person was knocked down by an exuberant dog) and the subsequent sight of dogs evokes the earlier response--fear.
Most physiologists deal with reduction. Phenomena are explained in terms of simpler phenomena. For example, the movement of a muscle is explained in terms of changes in the membrane of muscle cells, entry of particular chemicals, and interactions between protein molecules within these cells. A molecular biologist would "explain" thes
A. A child chokes on a fishbone and as an adolescent is reluctant to eat fish.
B. A person feels lonely and after a while buys a dog for companionship.
C. A child studies science in school and later grows up to become a teacher.
D. A person hears that a snowstorm is predicted and that evening is afraid to drive hom

[单项选择]When Amy worked she was badly paid because______.

[单项选择]When she was awake,she found that she was standing on ______ segmed to be a piece of stone.
A. that
B. which
C. what
D. it

[单项选择]When she was awake, she found that she was standing on ______ seemed to be a piece of stone.
A. that
B. which
C. what
D. it

[单项选择]When she arrived, she went in the wrong（）.
A. direction
B. place
C. location
D. course

[单项选择]She is over 70 but she （）of the company.
A. is still in charge
B. still in the charge
C. is still under the charge
D. still charge