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A．The Moon has no waterB．The Moon's materials came from Earth's coreC．The Moon's core
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A．To give an example of a bad reaction to penicillinB．To show how penicillin has chang
The United States Congress appropriates some four million dollars______ the upkeep of the
听力原文：W: Hi, Dan, you know that lab you missed？ You can have my notes.
M: Thanks. I appreciate that.
W: So how are you feeling？
M: Much better now that I began taking an antibiotic. Student health gave me one, and it's really help. You know what amazes me that the human races survive before antibiotics.
W: I agree. When my father was a young boy in the 1940's, he got blood poisoning and would have died. But his doctor had heard of this new drug, called penicillin.
M: Wow, he was really lucky. And now we have lots of antibiotics that kill bacteria.
W: Well, penicillin kills bacteria, but not all antibiotics do. Some are just slowing the bacteria down until our normal immune defenses can finish the job. Tetracycline works that way.
M: Wow, you are a fund of drug trivia. How do you know all these？
W: My mother used to look up all our medicines, prescription and non-prescription. There are lots of books around. It's interesting. What antibiotic are you taking？
M: I don't remember. It's on the bottle. I think I'll take a new look at the label and drop by the library to see if they have reference books on medicines. See you in lab tomorrow.
(31)
听力原文： In order to diagnose and treat abnormal behavior, we have to start with clear definitions of what's meant by abnormal and normal. Criteria must be worked out for distinguishing one from the other in actual clinical cases. The word abnormal implies a deviation from some clearly defined norm. In the case of physical illness, the boundary lines between normality and pathology are often clearly delineated by medical science, making it easier to diagnose. On the psychological level, however, we have no ideal model to use as a base of comparison, nothing to help us distinguish mental health from mental disorder. The problem of defining abnormal behavior. via establishing just what is meant by normal behavior. has proved extremely difficult. However, as chapter 5 outlines, several criteria have been proposed. One norm described in detail in your text is personal adjustment. An individual who was able to deal with problems effectively without serious anxiety or unhappiness or more serious symptoms is said to be well adjusted. Personal adjustment as a norm has several serious limitations though. For example, it makes no reference to the individual's role in the group. How're we going to classify, for example, the a typical politician or businessperson who engages in unethical practices. Either might be a successful, happy, well-adjusted individual. Obviously, the welfare of the group, as well as that of the individual, must be considered, which brings me to the next approach.
(48)
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