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1. On February 27， 2011， Premier Wen Jiabao held an online chat with Internet users across country and overseas， third time the leader had participated in the events．
A. the; theB. a; a
C. /; theD. /; a
2. It is said that to classic music may be helpful in improving teenagers taste．
A. exposed
B. having exposed
C. being exposed
D. exposing
3. Most students attitudes towards fashion are reported nowadays in a recent survey．
A. changing
B. to be changing
C. having changed
D. to be changed
4. English can be difficult to learn， it is a very useful tool for communication．
A. SinceB. While
C. UnlessD. If
5. A performer who for a commercial performance uses a published work created by others doesnt need from， but shall pay amount of money to the copyright（版权） owner．
A. permissionB. allowance
C. permitD. patent（专利）
A. the; theB. a; a
C. /; theD. /; a
2. It is said that to classic music may be helpful in improving teenagers taste．
A. exposed
B. having exposed
C. being exposed
D. exposing
3. Most students attitudes towards fashion are reported nowadays in a recent survey．
A. changing
B. to be changing
C. having changed
D. to be changed
4. English can be difficult to learn， it is a very useful tool for communication．
A. SinceB. While
C. UnlessD. If
5. A performer who for a commercial performance uses a published work created by others doesnt need from， but shall pay amount of money to the copyright（版权） owner．
A. permissionB. allowance
C. permitD. patent（专利）