填空题


Questions 9 to 10 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each question.
Now listen to the news.
Wheat supplies have decreased in recent years because ______.

【参考答案】

D
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单项选择题
The argument in the passage leads most naturally to which of the following conclusions
A．A low output of urinary kallikrein is a likely cause of high blood pressure in children.
B．The kallikrein-kinin system plays an important role in the regulation of blood pressure.
C．Essential hypertension may have biochemical precursors which may be useful predictors in children.
D．The failure of the body to produce sufficient amounts of kinins is the cause of essential hypertension.
单项选择题
Which of the following titles best describes the content of the passage
A．The Therapeutic Value of Antipsychotic Drugs
B．The Tradeoff in the Use of Neuroleptic Drugs
C．The Connection between Psychotherapy and Neuroleptic Drugs
D．Recent Developments in the Treatment of Mental Illness
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