It can be inferred from Paragraph 5 that DNA fingerprinting _________. is costly to the police。 could be a social issue。 1s the only way to prove innocence。 has been a profitable business。
Schmidt and her colleagues are the first group of scientists studying Europa. Right 。 Wrong 。 Not mention。
请在第_____处填上正确答案。 Still 。 However 。 Moreover。 Thus。
请在第_____处填上正确答案。
请在第_____处填上正确答案。