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【单选题】
先天之精源于 ( )A.
后天之精
B.
营养之精
C.
生殖之精
D.
脏腑之精
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举一反三
【单选题】The number of red-crowned cranes is getting ___________.
A.
small and small
B.
little and little
C.
smaller and smaller
D.
less and less
【单选题】The population of China is _____ than that in Australia. [ ]
A.
far more
B.
much larger
C.
much smaller
D.
far less
【单选题】The number of pandas(熊猫) becoming .
A.
is more and more
B.
are less and less
C.
is smaller and smaller
D.
are fewer and fewer
【单选题】According to the talk, what did David Sarnoff predict about radios?
A.
They would get smaller in size.
B.
Their signals would travel further.
C.
They would become less popular than television.
D.
They would be common household items.
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