下列哪项属于重度烧伤A．Ⅲ度烧伤8％ B．Ⅱ度烧伤25％ C．Ⅲ度烧伤25％ D．烧

导致胃痛呕血黑便的病理机制有

A．胃热迫血妄行

B．瘀血阻滞

C．胃阴不足

D．肝火上炎

E．脾虚不能统血

用所给单词的适当形式填空。

1. Susan swims very well. She is a good ______. (swim)

2. Lily always helps her mother clean the house. She is very ______. (help)

3. My brother often ______ (play) basketball on Wednesday afternoon.

4. Thank you very much for ______ (write) to me.

5. Every day Millie spends half an hour ______ (read) English.

（）润滑适用于需油量较多，需要进行冷却的高速重载的场合。

A.手工加油

B.滴油

C.压力

D.飞溅

如光伏出线开关跳闸报：二段过流，应检查箱变及（）设备。

某投资经理对其投资组合实施被动跟踪指数的投资策略，假设他预计下一阶段指数将会上涨，但涨幅有限，并且该投资经理放弃未来指数大幅上涨可能带来的收益而获得部分对指数下跌的补偿，应采取的策略为（）。

A.买入指数对应的看涨期权

B.卖出指数对应的看涨期权

C.买入指数对应的看跌期权

D.卖出指数对应的看跌期权