诊断再生障碍性贫血的主要检查是（）
A.临床表现
B.一般实验室检查
C.磁共振成像（MRI）
D.骨髓检查和活检
E.放射性核素扫描
参考答案：D
.根据句意和首字母提示填入所缺单词。
1. What's your t______ number?
2. Here is my ID c______.
3. My sister is f______ years old.
4. Can you count from one to n______?
5. How many people are there in your f______?
6. Six and two is e______.
7. I'm No. 7. What's her n______?
8. L______.! That's an English book.
9. This is a boy. H______name is Bruce.
10. My name is Zhang Lan. Zhang is my f______ name.
如果自己一个人在家，遇到有不明的快递物品送到家里，我们应该先电话向父母问核实情况，才能开门接受快递员送的东西。（）
