一个正方形的周长是60厘米,它的面积是______平方厘米.
60÷4=15(厘米),
15×15=225(平方厘米).
答:正方形的面积是225平方厘米.
故答案为:225.
介词填空。
1. Tom, can you play basketball _____ me?
2. I have to go to the doctor _____ Saturday.
3. We will go to the movies _____ the evening.
4. Can you come to my party _____ Sunday afternoon?
5. How _____ going for a walk?
6. We have to study _____ a test.
7. Thanks _____ giving us a present.
8. Why don't you come over _____ China for a holiday?
9. Lucy was _____ duty yesterday, but she forgot to clean the classroom.
10. It's very nice _____ you to get me tickets _____ the World Cup.
他莫昔芬属于()。
A.干扰有丝分裂的药物
B.调节体内激素平衡的药物
C.抗代谢药
D.靶向抗肿瘤药
E.放疗与化疗的止吐药