A. Two important tests of a new airliner because it is -找考题网

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A. Two important tests of a new airliner because it is put into use.
B. How to carry out tank test in the water.
C. How pilots carry out the test flights.
D. How to make a safe passenger plane.

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HIV integrates into the DNA of infected cells turn the cell of the immune system into a virus-generating factory.

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A. It’s not important how he dances. B. It’s too crowed to dance anyway. C. If he’s careful, no one will notice. D. No one knows the steps to the dance.

A. It’s not important how he dances. B. It’s too crowed to dance anyway.
C. If he’s careful, no one will notice. D. No one knows the steps to the dance.

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