单项选择题

This passage mainly discusses ______.

A．the functions of carbon dioxide and water
B．the role of water in a growing plant
C．the process of simple sugar formation
D．the synthesis of water with carbon dioxide

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热门试题

单项选择题

What does the author actually say about pronouncing foreign languages

A．There are not many people who are even fairly good.
B．Nobody is really an expert in the skill.
C．There are even some people who are moderately proficient.
D．Only a few people are really proficient.

单项选择题

How might the teacher find himself wasting lesson time

A．By spending lesson time on pronunciation.
B．By not using books on speech mechanics on pronunciation.
C．By not giving students a clear mental picture of the difference between sounds.
D．By making ill-informed comments upon students' pronunciation.