Seat occupation has become a common phenomenon in your university. The library management
The phrase "the silent revolution"(Line 6, Paragraph 4)implies that population aging will
A. be a violent process.
B. take the world by surprise.
C. make the world different.
D. happen unnoticed.
【C10】
A. why
B. what
C. how
D. which
【C12】
A. pass
B. permit
C. allow
D. forbid
微信支付 
支付宝支付