A. continue
B. continues
C. continuing
D. to continue
A. price
B. piece
C. challenge
D. certificate
A. were/was
B. are/is
C. was/were
D. is/are
A. behavior
B. action
C. manner
D. movement
A. are/want
B. is/wants
C. is/want
D. are/wants
A. meaning
B. message
C. information
D. sense
A. exchange
B. assistance
C. substitute
D. preference
A. China-the Native Place of Pandas Forever
B. China’s Efforts to Clone Pandas
C. China’s First Cloned Panda
D. Exploring the Possibility to Clone Pandas
A. Lack of available panda eggs.
B. Lack of host animals.
C. Lack of qualified researchers.
D. Lack of funds.
A. essentially new
B .pioneering
C. evolutionary
D. epoch-making
A. 1 year
B.3 to 5 years
C.2 years
D. 25 years
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