题目内容
（请给出正确答案）
[主观题]
Which of the following is true about the World Digital Library according to the passage？A．
Which of the following is true about the World Digital Library according to the passage？
A．A team at the Library of Congress in Washington developed its website alone.
B．Libraries and institutions in most countries have contributed to the library so far.
C．All documents and their explanations in the library are in seven official languages.
D．You can learn from the library about British politics and economy 1000 years ago.
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