A:O型血
B:AB型血
C:A型血
D:B型血
下列四组省级行政单位中,濒临两个海的是( )
下列哪种地貌是黄土高原农业较发达,人口集中的地区( )
Read and Judge.读短文,判断表格中的单词是对是错。
Hello. I am a boy. My name is Jack. I carry my bag and go to school. 1 have a pendl-case. Open my pencil-case. I have a pen, pencil, and shmpener ( 削笔刀). And the books are in the bag.