造血微环境包括()、()、()、()以及()。
参考答案:微血管系统;末梢神经;网状细胞;基质;基质细胞分泌的细胞因子
“全心全意,小天鹅”属于企业的()。
A、经营目标
B、经营方针
C、经营战略
D、战略目标
用所给词的适当形式填空。
1. He ______ (go) to Beijing on his summer holiday next year.
2. The weather is quite ______ (wind) in Jinan in fall.
3. The students are busy ______ (do) some exercises.
4. That's a ______ (hard) question.
5. There are four ______ (season) in a year.