Which of the following can best sum up the author's overall reaction to her adult son's positive response to spring cleaning？
A. Surprised and skeptical.
B. Elated and hesitant.
C. Relieved and optimistic.
D. Optimistic and hesitant.
查看答案
A．In additionB．Above allC．GenerallyD．However
A. In addition
B. Above all
C. Generally
D. However
Which of the following interpretations of the biologists' theory about melatonin is INCORRECT？
A. The production of melatonin in our bodies varies at different times.
B. Melatonin is more likely to cause sleepiness in our bodies.
C. The reduction of melatonin will cause wakefulness in our bodies.
D. The amount of melatonin remains constant in our bodies.
In the sentence "The manager interviewed Jim himself in the morning", the italicized work
A. the object
B. the verb
C. the subject
D. the prepositional phrase
John is up to his eyes in work at the moment. The underlined word means______.
A. very excited
B. very busy
C. very tired
D. very efficient
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