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问题 选择题

Nine plus three _________ twelve.

A．makes

B．make

C．ismaking

D．aremaking

答案

答案：A

  Nine plus three看做一个整体。

完形填空

先通读下面的短文，然后根据短文内容和所给字母，在空格内填入一个适当的词，使短文意思完整。所填单词必须在横线上完整写出。（本大题共5分，每格0.5分）

We are beautiful red-crowned cranes. We have red caps on top of our heads. You may (1) t____ the caps are our feathers. In fact, they are combs (冠). We are one of the l____ birds in size in the world. We are the heaviest cranes. An adult red-crowned crane can w____ up to 11 kilograms. We are good at dancing. I think we are the most beautiful dancers of all the birds. We are also good s_____. We sing loudly and b____. We are good at flying as well, we fly to warm East Asia (亚洲) when (6) s_   comes. We give birth to baby cranes there. We like to live together on w____ in Southwest China and some other places.

We live on worms and small fish. We like to live in long grasses. Water and grasses are i____ for us. But sometimes, life is harder these years. We are one of the most endangered birds in the world now. People keep  c____ our living areas into farms and buildings. We don’t have enough space to live. And we don’t have enough food to feed our babies because people fish and h_____ too much.
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多项选择题

动脉血气分析示PaCO2和HCO3-同时下降，可能的诊断是（）。

A.呼吸性酸中毒

B.代谢性碱中毒

C.呼吸性碱中毒

D.代谢性酸中毒

E.呼吸性碱中毒并代谢性酸中毒
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