单项选择题

What can be inferred about the swallows mentioned in the conversation

A．They are a type of insect.
B．They are a kind of fish.
C．They are a type of bird.
D．They are a type of pi
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问答题
Listen to the following passage. Altogether the passage will be read to you four times. During the first rending, which will be read at normal speed, listen and by to understand the meaning. For the second and third readings, the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last rending will be rend at normal speed again and during this time you should check your work. You will then be given 2 minutes to check through your work once more.
单项选择题
No one would have time to read or listen to an account of everything ______ going on in the world.
A．it is
B．as is
C．there is
D．what is
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