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【单选题】
人工获得一个杂种植株，需要下列哪项步骤? （ ）A.
分离原生质体→诱导原生质体融合→培养 → 得到杂种植株
B.
分离原生质体 → 原生质体融合→ 杂种植株
C.
获取细胞 →原生质融合→ 培养→ 得到杂种植株
D.
获取细胞→原生质直接融合→培养
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举一反三
【单选题】We are all busy talking about and using the Internet , but how many of us know the history of the Internet ? Many people are surprised when they find that Internet was set up in the 1960s.At that time...
A.
make computers cheaper
B.
maker itself keep on working all the time
C.
break down the whole network
D.
maker computers large and expensive
【单选题】we are surprised to find that the goods were __________ to the sample originally submitted by you.
A.
worse
B.
inferior
C.
better
D.
super
【单选题】We are surprised by the ___________ of cheating on campus which seems not to be changed in the near future.
A.
discrepancy
B.
fluctuation
C.
maturity
D.
prevalence
【简答题】图标是Windows操作系统中的一个重要概念,它表示Windows的对象。它可以代表____。
【单选题】It seems that, for all our ingenuity, we are doomed to be “fooled by randomness” and surprised by “______”.
A.
naked savages
B.
black swans
C.
shoddy constructions
D.
male descendants
【单选题】图标是Windows操作系统中的一个重要概念,它表示Windows的对象,可以指________。
A.
应用程序
B.
文档或文件夹
C.
设备或其他的计算机
D.
以上都正确
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