明清政府实行的海禁政策的含义是（）
A.禁绝中国对外贸易
B.一概排斥西方事物
C.封闭边界固守疆土
D.禁止国人出海、限制外人来华贸易
参考答案：D
根据句意，用适当的单词填空。
1. If you want to eat the banana, you should __________ it first.
2. You'd better read the __________ carefully before you take the medicine.
3. Beckham is one of the most famous football __________ in the world.
4. What did Linda and Tony do __________their last day off?
5. Excuse me! Can I __________ your pen? Mine is at home.
6. We planned __________ (go) hiking next Sunday.
7. I think swimming is __________ (interesting) than running.
男性患者，58岁，全口只余下前牙，检查见牙槽嵴丰满，上颌散在骨尖，治疗计划为先去除骨尖，可摘局部义齿的制作应该在手术后
A．1周
B．2周
C．3周
D．4周后
E．1年后
