试题与答案

有一培养基配方如下: 甘露醇 10g  KH2PO40.2g  MgSO4•7H2O

题型:问答题 简答题

题目:

有一培养基配方如下:

甘露醇 10g  KH2PO40.2g  MgSO4•7H2O0.2g  CaCO3 5.0g   NaCl 0.2g  CaSO4•2H2O  0.1g

琼脂  20g  水 1000ml

试述其C源、N源、能源物质各是什么?NaCl和CaCO3起何作用?

答案:

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[04年高考福建卷]Not too long ago ,an incident that happened at Walt Disney touched me greatly.A guest  36     out of our Polynesian Village resort(度假胜地)at Walt Disney was asked how she   37     her visit.She told the front-desk clerk she had had a (n)     38    vacation ,but was heartbroken about    39     several rolls of Kodak color film she had not yet    40   .At that moment she was particularly     41    over the loss of the pictures she had shot at our Polynesian Luau ,     42   this was a memory she especially treasured.

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