单项选择题

Questions 27—30 are based on the dialogue. You now have 20 seconds to read Questions 27—30.
Why do the staff members cover themselves with cloth as they work

A．So that they are protected from scratches by the crane’s talons.
B．So that they aren’t exposed to infectious diseases.
C．So that the chicks can be examined in a sterile environment.
D．So that the chicks don’t become dependent on humans.

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单项选择题

Which of the following about the Internet is true according to the passage

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B．Efforts are needed to control Internet.
C．Paraguay refused to sign a treaty for transmission.
D．The United Nations has found ways to prevent the Internet from developing.

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Which country passed a law banning human cloning

A．The United States.
B．The United Kingdom.
C．Switzerland.
D．Russia.

Questions 27—30 are based on the dialogue. You now have 20 seconds to read Questions 27—30. Why do the staff members cover themselves with cloth as they work 您的浏览器不支持 audio 元素。

Questions 27—30 are based on the dialogue. You now have 20 seconds to read Questions 27—30.
Why do the staff members cover themselves with cloth as they work