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