The back garden of our house contains a lawn, ______ very pleasant to sit on in summer.
A.which is
B.which it is
C.it is
D.where it is
第2题
该患者的烧伤程度为
A. 轻度烧伤
B. 中度烧伤
C. 重度烧伤
D. 特重度烧伤
E. 轻中度烧伤
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