题目内容

从物理性质上区别以下矿物对:橄榄石-绿帘石、普通辉石-普通角闪石、正长石-斜长石

查看答案
更多问题

—What nationality ___ you?—I ___ Chinese.

A.are/is
B. are/am
C. is/am

—What ___ your nationality?— I ___ Korean.

A. are/is
B. is/am
C. is/are

My sister is ___ student, and my brother is ___ engineer.

A. a/an
B. a/a
C. a/the

—___ is the boy?—He is my brother.

A. How
B. What
C. Who

答案查题题库