在下列民族中占新加坡人口76%的民族是（）。 A.印度族 B.马来族 C.华族 D.

阅读下面短文，根据要求完成下列各题。

It was December 25. Marie, a 13-year-old Australian girl, was happy. It was Christmas, and Marie's mother was making a special cake. She put four small coins into the cake,  and then she baked (烤) it. The four coins were for good luck. After dinner Marie and her family ate the cake. They found three coins in the cake and put them on the table. Where was the fourth coin? It was missing, but Marie's mother didn't notice.

After Christmas, Marie got sick. She coughed, and she couldn’t speak. After six weeks she felt better, but she still couldn't speak. Marie's parents took her to hospital. Doctors at the hospital looked her over, and then said, "We are sorry, but we can't help her." For 12 years Marie didn't speak. She grew up, she got a job, and she got married. But she never spoke. One day,  when Marie was 25 years old,  she got a sore throat ( 嗓子疼 ) at work. She began to cough. She coughed up something small and black. What was it? Marie didn't know. She took it to the hospital. A doctor at the hospital said, "This is a coin!" The doctor told Marie, "I think you can speak again." Marie went to a special doctor, and soon she could talk.

根据上面短文的内容回答问题。

小题1:What did Marie's mother make at Christmas?

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小题2:What did Marie's mother put some coins in the cake for? 

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小题3: How many coins did Marie's family find after eating the Cake?

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小题4:How long didn’t Marie speak?

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小题5:Could Marie speak at last?

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若除油罐进水的含油量不超过5000mg/L，自然除油的去除率可达（）以上。

A、65%

B、70%

C、85%

D、95%

能与特定溶质结合，改变构象，使溶质分子顺浓度梯度通过膜的运输方式是（）

A.膜脂双层简单扩散

B.膜通道蛋白易化扩散

C.载体蛋白的易化扩散

D.离子梯度驱动的主动运输

E.受体介导的胞吞作用

酸性食品pH在（）。

A.<3.7

B.3.7～4.5

C.4.5～5.3

D.>5.3

发芽试验时，有的幼苗发育良好，有的损伤、畸形或不均衡，有的幼苗严重腐烂，有的种子发霉，你作为种子检验员应采取怎样的措施？