2b=b2______．

单词拼写。根据汉语或首字母的提示写出单词，使句子完整与正确。1. C__________ （好奇心）can drive children to know more about the world around them.

2. People with good ____________(礼貌) will be welcome everywhere.　　

3. Mr. Green a___________ to Mrs. Brown yesterday for destroying some flowers in her garden.

4. As they had been ____________(包围）by our army for a week, the enemy had no choice but to surrender (投降).

5. Millions of people in Africa are still s_________to death at present because of hunger.

6. Why should I say sorry when it’s not my f_________.

7. A new computer s__________(系统) was introduced into our school last year.

8. It was the first time that he had lived ___________（独立地）.

9. It is o________ that foods, such as rice, sugar, butter, oils and so on can give us energy.

10. We ____________ (寻找) for somewhere to live but failed.

叶绿体含有的某生物高分子物质中含有S元素。该物质可能具备的生理功能是[ ]

A．吸收并转换光能

B．作为还原C₃的物质

C．光反应的最终电子供体

D．协助Mg²⁺进入叶绿体

远动RTU模式可通过串行口配置成功能强大的（），所内其他智能设备一般通过串行接口接入RTU。

A.网络系统

B.信息系统

C.人机联系子系统

D.转换系统

质量功能表

下列关于样品的说法正确的是：（）

A.抽样人员应当在企业指定的样品库抽取自检合格样品。

B.企业现场无样品时，可采取要求企业现场生产或企业另行通知检验机构再次抽样。

C.检验机构内样品接受人员发现样品破损后应当拒绝接受该样品。

D.企业确认检验结果后，样品可以立即退还企业，不必等到异议期满。