单项选择题

A．He works three nights every two weeks.
B．He works four times as much as he did before.
C．He has twice as much work as he used to have.
D．He has three free days for every four days he works.
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填空题
It is generally not advisable that______(小孩在低年级时学习负担过重).
单项选择题
What does the author think about Siri’s being able to connect to 35 sites（）

A．It’s not helpful enough.
B．It’s convenient enough.
C．It’s nothing new.
D．It’s something unique.
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