构成骨髓微环境的主要细胞是()
A.多能造血干细胞
B.淋巴干细胞
C.T细胞
D.B细胞
E.骨髓基质细胞
参考答案:E
用适当的疑问词完成下列句子。
What How many How old Where Who
1.- is his job? -He's a bus driver.
2.- watermelons can you see? -I can see eight.
3.- is the camera? -It's on the fridge.
4.- is your friend? -He's thirteen.
5.- is that student? -He's my friend, Xiaofang.
在豫湘桂战役中,国民党不战弃守的有()。
A.河南,长沙,南宁
B.河南,衡阳,广州
C.武汉,长沙,衡阳
D.枣宜,南宁,广州