【名词&注释】
单倍体(haploid)、春秋时期(spring and autumn period)、南北朝、葫芦藓、次生木质部(secondary xylem)、《梦溪笔谈》、拉丁文(latin)、双子叶植物(dicotyledon)、空白处、束间形成层(interfascicular cambium)
[单选题]沈括《梦溪笔谈》载：“世间锻铁所谓钢铁者，用柔铁屈盘之，乃以生铁陷其间，泥封炼之，锻令相入，谓之团钢。”这项技术最早出现于
A. 春秋时期
B. 西汉
C. 南北朝
D. 北宋
查看答案&解析
举一反三：
[多选题]第二节 根据对话内容，从对话后的选项中选出能填入空白处的最佳选项—Debbie！I can’t believe it！I haven’t seen you for ages.
A. —Dorothy！it’s really a nice surprise！61
B. —pretty good.
C. —62
D. —I wish I could. But I’m on my way out. I have to be in the city in an hour.
E. —63
F. —there’s a lot of traffic and I really have to get going. You know where I live — why don’t you drop in one evening?
G. — I’ll do that. 64 let’s keep in touch.
H. — I’d really like to. I’ll talk to you soon, Debbie. I’m glad I ran into you.
I. — 65
J. take care.
K. How are you?
L. Where have you been?
M. Can you join me?
N. Come on. Just for a minute.
O. F. And you should feel free to call or visit me.
P. G. It’s been a whole year since we saw each other last time.
[单选题]平常所见到的绿色、具茎叶和假根的葫芦藓植物体，其细胞的染色体数目为单倍体。( )
A. 正确
B. 错误
[单选题]China has got a good for fighting against the flu with its careful and smooth
A. reputationB．influence
B. impressionD．knowledge
[单选题]科的拉丁文(latin)词尾是-aceae，亚科的拉丁文(latin)词尾是-oideae。( )
A. 正确
B. 错误
[单选题]常具副萼的分类群是( )。
A. 槭树科
B. 锦葵科
C. 伞形科
D. 旋花科
[单选题]单雌蕊的子房可具有( )。
A. 侧膜胎座
B. 边缘胎座
C. 中轴胎座
D. 特立中央胎座
[单选题]双子叶植物(dicotyledon)茎内的次生木质部由( )分裂、生长和分化而成。
A. 束中形成层细胞
B. 束间形成层(interfascicular cambium)细胞
C. 纺锤状原始细胞
D. 射线原始细胞
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