外伤性血胸，胸穿抽得的胸腔内积血一般是不凝的，除非
A．给予止血药后
B．胸内有大量出血
C．补充多种凝血因子后
D．同时合并食管损伤
参考答案：B
In his speech at the conference, the Chairman solemnly stated that the responsibility to our lives and the kind of world in that we live is ours and ours alone.
A．for ... in which
B．of... for which
C．of... in which
D．for ... on which
完成句子（每空词数不限，10分）
1. 北京的天气和南京大不一样。
The weather in Beijing is __________________________ in Nanjing.
2. 他还像从前那样经常经常给我写信。
He writes to me _____________________________ before.
3. 建设好我们的家园是我们的职责。
It is __________________________ our homeland.
4. 现在许多动物处于困境之中，我们必须采取措施保护它们。
Now many animals are __________________, we should _______________ to protect them.
5. 顺便问一下，这个公园是全年开放的吗？
, is the park open ?
