矽肺最常见的死因是()
A．慢性肺源性心脏病
B．结核
C．呼吸道感染
D．自发性气胸
E．呼吸功能衰竭
参考答案：B
木匠师傅为了检查一块木板是否直，常采用的方法是：闭着一只眼睛，用另一只眼睛沿着棱的长度方向看去．这样做是利用了______．
It rained heavily. And it was very kind of him to _____ his umbrella with me.
A．share
B．take
C．bring
D．use
