单项选择题

Passage One
Questions 26 to 28 are based on the passage you have just heard.

A．Radiation from the sun.
B．Radiation from the Van Allen Belts.
C．Radiation from the meteors.
D．Radiation from the Van Allen Belts and from the meteors.

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单项选择题What is people’s attitude towards a mixture of blood between dogs and wolves

A．It’s not encouraged.
B．It’s strongly protested.
C．It’s warmly welcomed.
D．It’s responded indifferently.

单项选择题A．Make an appointment with the doctor.B．Return the exam papers to his students.C．Mark the latest homework assignment.D．Put a cancellation notice on the classroom door.

A．Make an appointment with the doctor.
B．Return the exam papers to his students.
C．Mark the latest homework assignment.
D．Put a cancellation notice on the classroom door.

Passage OneQuestions 26 to 28 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。

Passage One
Questions 26 to 28 are based on the passage you have just heard.