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问题
单项选择题
实心砖墙的( )组砌方式常用于清水砖墙。
A．一顺一丁式
B．两平一侧式
C．十字式
D．多顺一丁式
答案
参考答案：D
问答题 简答题
如何鉴别高梁的质量？
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选择题
—_______ you often tired on Fridays?
—Yes. I often need a good rest after a long week.
A. Were
B. Did
C. Do
D. Are
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