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speak—改成speaking
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填空题fair

单项选择题According to the passage, we can be sure that______.

A．organised crimes rampaged in the US during the era of Prohibition
B．organised crime can profit more from handling and reselling of stolen goods than from trade in pornographic literature
C．special measures have been taken to crack down any form of illegitimate activities
D．all of the above

填空题— the—删去第二个the

填空题sounds∧experiment—加入and

单项选择题Why is it likely for those cloned animals born alive to have abnormalities

A．Scientists haven’t got the faintest idea at all.
B．Scientists haven’t researched into the cause.
C．Scientists speculate that there must be something wrong in the genetic reprogramming.
D．Scientists calculate that those animals are susceptible to diseases.