题干

下列不符合右图所示含义的是 
                              

A:将酵母菌置于葡萄糖溶液中,当酵母菌放出的CO2与吸入的O2之比为2时,有氧呼吸与无氧呼吸消耗的葡萄糖之比

B:卵原细胞减数分裂产生的卵细胞和极体数目之比

C:将用15N标记的DNA置于含14N的环境中培养,连续复制3次后经密度梯度离心后,窄带和宽带之比

D:两只黑色豚鼠(为杂合体)相交,产生了4只小豚鼠,这4只小豚鼠的表现型之比

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D

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At the midnight, thunder was crashing and the rain was pouring. Suddenly my father rushed into my room. “Adam! Adam! Get up! We're flooding!” he shouted and shook me by the shoulders. That woke me up! I ran downstairs to the basement (地下室). It was like a swimming pool. My mother and I immediately started to pick up things and take them upstairs. I had no shoes on, so my feet felt quite cold.

Things got worse every minute. Within the next hour, we had moved everything that we could to the first floor. The computer, big-screen television and heavy boxes filled with our most valuable things were taken to safety. However, our piano, sofa, washing machine and water heater were all still down there — being destroyed. There was nothing we could do.

That was the hardest part. Knowing that your home is being destroyed is bad enough, but realizing that you can't do anything to stop it feels even worse. Water had come in our front door. Rescue boats were floating in our streets. Mother told me to pack an overnight(通宵, 前夜) bag of clothes and valuables and get ready to leave.

When it was finally safe to walk outside, all the people in the neighborhood gathered at the street corner. People became friends, and friends became like family. People comforted each other. We learnt later that the National Weather Service had declared (宣布) the storm a flash flood.

I really have learnt something from this flood, I've learnt what destruction is. I have learnt what safety means. I know in the future, when I watch people's lives affected (影响) by natural disasters, I can understand them. I will show my great pity on them and I will do what I can to help them.