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A.The inner bark of a mulberry tree and wool.B.Wool and bamboo.C.Wood and bamboo.D.Gra

A. The inner bark of a mulberry tree and wool.
B. Wool and bamboo.
C. Wood and bamboo.
D. Grass and wood.

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CDMA and GSM are the two main network services available in Australia.

A. Y
B. N
C. NG

A.He is definitely learning Chinese.B.He is definitely learning English.C.He is probab

A. He is definitely learning Chinese.
B. He is definitely learning English.
C. He is probably learning a foreign language.
D. He is learning interpersonal skills.

A.A teacher and student.B.An employer and employee.C.A grandparent and grandchild.D.Tw

A teacher and student.
B. An employer and employee.
C. A grandparent and grandchild.
D. Two new friends.

Texting is uncommon in Asian countries.

A. Y
B. N
C. NG

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