问题
选择题
下列关于细胞核的叙述正确的是[ ]
A．真核细胞的核膜上有大量的多种的酶，有利于多种化学反应的顺利进行
B．在电镜下观察分裂间期的真核细胞，可以看到细胞核的主要结构有核膜、核仁和染色体
C．真核细胞的核膜上有核孔，脱氧核糖核酸等大分子物质可以通过核孔进入细胞质
D．原核细胞的拟核除没有核膜外，其他方面与真核细胞的细胞核没有差别
答案
答案：A
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下列关于细胞核的叙述正确的是[ ]
A．真核细胞的核膜上有大量的多种的酶，有利于多种化学反应的顺利进行
B．在电镜下观察分裂间期的真核细胞，可以看到细胞核的主要结构有核膜、核仁和染色体
C．真核细胞的核膜上有核孔，脱氧核糖核酸等大分子物质可以通过核孔进入细胞质
D．原核细胞的拟核除没有核膜外，其他方面与真核细胞的细胞核没有差别
答案：A
Sam Kaye is only 12 years old. But he is a famous photographer (摄影师) not only in the UK, but also in＿countries. He is even the youngest member of the Royal Photographic Society (RPS,皇家摄影协会) of the UK. It was＿in 1853 and it has a long history. It was the＿photographic society in the world. About one third of its members are famous photographers all over the world. Sam Kays started taking photos＿the age of six. Last year, the UK schoolboy went on a trip to Africa with his parents. He took lots of photos of African ＿such as lions, elephants, foxes and birds. He＿these photos to the Royal Photographic Society of the UK. People at the RPS were＿to see Sam’s photos. They said the photos were so great. Sam likes photography and his dream is to be a＿in the future. Sam’s parents are＿of their son. They encourage him to＿his dream. They say his dream can come true one day.
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