单项选择题

Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．They carried passengers, but not cargo.
B．They were large, but surprisingly fast.
C．They were the first successful steam-powered ships.
D．They were more reliable than other ships of the 1860’s.

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单项选择题

A．It influences the surface temperature of Mars.B．It protects living beings from harmful rays.C．It keeps a planet from overheating.D．It is the main component of the air people breathe.

A．It influences the surface temperature of Mars.
B．It protects living beings from harmful rays.
C．It keeps a planet from overheating.
D．It is the main component of the air people breathe.

单项选择题

Which of the following statements can best express the passage

A．Chilly weather puts the freeze on the E!/EMA Golden Globes party.
B．Relationships between pollutions and ecology.
C．The importance of ecology.
D．People should keep researching on society.

Passage TwoQuestions 30 to 32 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。

Passage Two
Questions 30 to 32 are based on the passage you have just heard.