单项选择题


Questions 29 and 30 are based on the following news. At the end of the news item, you will be given I0 seconds to answer the questions.
Now, listen to the news.
How long do the volunteers work in a small barn on a farm outside of Freeport, Illinois

A．5 hours.
B．10 hours.
C．17 hours.
D．20 hours.
<上一题 目录 下一题>
热门 试题

单项选择题
By saying that drought is a slow emergency , the author means that
A．drought is not an easy problem to solve.
B．drought is chronic dryness over seasons.
C．drought is caused by using water without any control.
D．drought is the result of mild winters with little snow.
单项选择题
What are the laboratory sessions primarily designed for
A．Testing.
B．Discussion.
C．Lectures.
D．Reading.
相关试题