为了以防浇捣混凝土时漏浆，直接与混凝土接触的模板应该用干燥的木材做成。
参考答案：错
The first textbooks _______ for teaching English as a foreign language came out in the 16th century.
A．having written
B．to be written
C．being written
D．written
生猪经屠宰放血、去掉毛、头、尾、蹄、内脏的躯体叫（）。
