In the 1977 experiment conducted by Meltzoff and Moore, researchers presented neonates with different facial gestures and observed and recorded their facial gestures. This study tries to investigate（）

The passage centers on______.

A．memory

B．two kinds of memory

C．short-term memory

D．an experiment on students

A．empathy

B．perspective taking

C．desire understanding

D．belief understanding

What is the main idea of this passage？

A．Dr. Whitten and Dr. Schanze's researching experiments on disinfection.

B．The possible way of eradicating hospital-caused infection and marine-dirt alike.

C．The history and development of antiseptics.

D．The process and principle of killing bacteria.

To study animal emotions, scientists should

A．set up improved and refined skillful experiments.

B．analyze human emotional.

C．distinguish what is emotional and what is conditioned.

D．learn from animal behaviorists.

请在第__（48）__处填上正确答案。 查看材料

A.In her experiment participants were seated at computers and told not to hit the "Alt" key， because doing so would crash the systems.

B."In some ways，" says Kassin， " false confession becomes a rational decision."

C."It"s a little like somebody"s working on them with a dental （牙齿的 ） drill， " says Franklin Zimring， a law professor at the University of California at Berkeley.

D."But adults are highly vulnerable too."

E.How could an innocent person admit to doing something he didn"t do？

F.Redlich also found that the younger the participant， the more likely a false confession.

请在第__（50）__处填上正确答案。 查看材料

A.In her experiment participants were seated at computers and told not to hit the "Alt" key， because doing so would crash the systems.

B."In some ways，" says Kassin， " false confession becomes a rational decision."

C."It"s a little like somebody"s working on them with a dental （牙齿的 ） drill， " says Franklin Zimring， a law professor at the University of California at Berkeley.

D."But adults are highly vulnerable too."

E.How could an innocent person admit to doing something he didn"t do？

F.Redlich also found that the younger the participant， the more likely a false confession.

请在第__（47）__处填上正确答案。 查看材料

A.In her experiment participants were seated at computers and told not to hit the "Alt" key， because doing so would crash the systems.

B."In some ways，" says Kassin， " false confession becomes a rational decision."

C."It"s a little like somebody"s working on them with a dental （牙齿的 ） drill， " says Franklin Zimring， a law professor at the University of California at Berkeley.

D."But adults are highly vulnerable too."

E.How could an innocent person admit to doing something he didn"t do？

F.Redlich also found that the younger the participant， the more likely a false confession.

A.has been put into actual use

B.was first put into actual use in 1977

C.had been repeatedly experimented on before 1977

D.was put on experiment in 1977

A.1947、1988、1977

B.1951、1977、1988

C.1951、1988、1977

D.1947、1988、1977

A.the year the author wrote the article

B.1977

C.any year between 1977 and 1983

D.1983