问题
选择题
My name _____ John, and _____ name is Kate. [ ]
A. am; her
B. is; her
C. is; his
D. am; his
答案
B
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My name _____ John, and _____ name is Kate. [ ]
A. am; her
B. is; her
C. is; his
D. am; his
B
”表示氢原子、“
”表示氧原子。下列方框中，符合“2H2O”所表示意义的是[ ]
