（）晶格的晶胞是由八个原子构成的一个立方体，并且在立方体每个面的中心还有一个原子。
参考答案：面心立方
It was his belief ______he would one day find his lost child ______ inspired him never to give up.
A．that; that
B．that; who
C．which; that
D．which; that
凹版印刷最大的优点在于颜色复制准确，其颜色靠印版空点大小与深度和油墨的变化来控制。制约印品颜色变化的因素比较少，并且凹版印刷印版造价比较低。（）
