卵黄双抗培养基中的双抗为（） A.青霉素链霉素 B.新霉素卡那霉素 C.万古霉素多黏

一种燃料电池中发生的化学反应为：在酸性溶液中甲醇与氧作用生成水和二氧化碳。该电池负极发生的反应是 [ ]

A．CH₃OH(g)+O₂(g)=H₂O(1)+CO₂(g)+2H⁺(aq)+2e^-

B．O₂(g)+4H⁺(aq)+4e^-=2H₂O(1)

C．CH₃OH(g)+H₂O(1)=CO₂(g)+6H⁺(aq)+6e^-

D．O₂(g)+2H₂O(1)+4e^-=4OH^-

短文改错。

    It is interested to visit another country, but sometimes there are some questions when we don't know the

language very well. It may be difficult to talk about the people there. We may not know how to use the

telephone in the country which are visiting. We may not know what to buy the things we need. In a strange

country we may not know where to eat and what to order in a restaurant. It is not easy to decide how many

money to tip (小费) waiters or taxi drivers. When we are helpful, we may not know how to ask help. After

a short time later, however, we learn what to do and what to say. We learn to enjoy life in another country,

and then we may be sorry to leave both the place and the people.

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党在过渡时期的总路线的最显著特点是( )

A．社会主义改造和工业化同时并举

B．社会主义改造和社会主义改革同时并举

C．民主革命和社会主义革命同时并举

D．先合作化，后工业化

试述素质教育思想的基本观点。