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问题 单项选择题

在林木的采伐中，不需领取采伐许可证的是（）

A.铁路、公路的防护林

B.农民自留地和房前屋后个人所有的零星林木

C.国有林场的林木

D.农民自留山和个人承包集体的林木

答案

参考答案：B

完形填空

根据短文内容及首字母提示，填写文中所缺单词，每空一词。

My name is Hu Wen. I am 12 years old. I s 小题1:  in No.2 Middle School. I am in Class 1, Grade 7. My twin sister Hu Yue is a 小题2:   in my class. But we don’t l 小题3:  the same. We go to school and go b 小题4: home in my father’s car. We help each other do o 小题5:   homework. I am good at English and she does w 小题6: in Maths. My classmates are very n 小题7: to us. We have a l小题8:  to talk about and we often chat with each other after c 小题9:  . But we n 小题10:__   talk in class.
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单项选择题

在丁二烯塔、回流罐气相中对氧含量的安全技术要求（）。

A.＜10ppm

B.＜15ppm

C.＜20ppm

D.＜100ppm
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