单项选择题

A．for
B．if
C．although
D．until
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单项选择题
Question 30 is based on the following news. At the end of the news item, you will be given 5 seconds to answer the question.Now listen to the news.
A．skin diseases.
B．pneumonia.
C．hepatitis.
D．HIV.
单项选择题
A．hungerB．floodC．insect pestD．natural disaster
A．hunger
B．flood
C．insect pest
D．natural disaster
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