题目内容

硫乙醇酸盐流体培养基为细菌培养基（）。

A. 对
B. 错

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改良马丁培养基为细菌培养基（）。

A. 对
B. 错

The falling tone is commonly used in the following sentences except.

A. declarative sentences
B. general questions
C. special questions
D. exclamatory sentences

The rising tone indicates basically lack of definiteness and incompleteness.

A. 对
B. 错

The falling-rising tone is rarely used in English and conveys no special meaning.

A. 对
B. 错