How often do most people blink normally？
A. Once a minute.
B. Once every 4 seconds.
C. Once a tenth of a second.
D. Once a second.
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What message does the man want to get from the woman？
A. If she can find a house large enough for holding a party．
B. If she can persuade her sister to leave her children behind．
C. If she and her sister are going to the seaside for the holiday．
D. If she and her sister are going to join his family for the holiday．
How many children visitors does the Louvre receive every year？
A. 1 million．
B. 1.5 million．
C. 2 million．
D. 2.5 million．
Why do many people surely go to the Louvre when they visit Paris according to the man？
A. They find it an opportunity to understand the works of art．
B. They find it a delight to see the beautiful paintings．
C. They feel obliged to visit the famous museum．
D. They feel pleased to satisfy their thirst for art．
Why does the woman apologize to the man？
A. For her rude behavior．
B. For her mistake．
C. For her spoiling the man' s clothes．
D. For her misunderstanding the man．
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