单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．To ask Jack to finish the lab test.
B．To ask Jack for help.
C．To ask the speaker to help her.
D．To ask Jack to come earlier.
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单项选择题
What is this article about
A．Energy from the sun.
B．How oil is made.
C．Natural gas.
D．Saving energy.
单项选择题
Solar energy causes
A．less pollution than oil
B．the same pollution as oil
C．more pollution than oil
D．financial problem
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