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Questions 19 to 21 are based on the conversation you have just heard. What is the man’s attitude toward the stem cell research

A．Supportive.
B．Opposed.
C．Pessimistic.
D．Neutral.
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单项选择题What do we learn about a smart car according to the woman

A．It uses new technology.
B．It is installed with a robot.
C．It is as clever as human.
D．It can talk with people.