问题
判断题
破骨细胞是一种多核巨细胞，其主要作用是参与骨的破坏。
答案
参考答案：错
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破骨细胞是一种多核巨细胞，其主要作用是参与骨的破坏。
参考答案：错
| 阅读理解。 | ||||||
1. Lucy and Mary have _______ volleyballs． A. 4 B. 6 C. 10 D. 12 2. Lucy plays _______ every day． A. ping-pong B. tennis C. baseball D. soccer 3. Mary doesn’t have A. volleyballs B. ping-pong balls C. baseballs D．basketballs． 4. _______ has/have two soccer balls． A. Mary B. Lucy C. Alice D. Mary and Alice 5. Alice _______ A. has no bails B. like sports C. is in the school club D. has a great collection |