单项选择题

According to the passage, people started to make glass ______.

A．4,500 years ago
B．nearly 4,500 years ago
C．less than 4,500 years ago
D．no less than 4,500 years ago
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单项选择题
Why did Lincoln added in the letter written for your son by Abraham Lincoln because he wanted ______.
A．to let the mother remember him
B．people to know he was the president
C．to show his thanks and kindness to the mother
D．to encourage the young soldier
单项选择题
The young soldier ______.
A．wrote a letter to his mother himself
B．was in hospital for a long time
C．couldn't say any words when he saw the president
D．was badly hurt in the Civil War
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