Which of the following statements could be tested scientifically to determine whether it is true or false （）

Which of the following statements is NOT true？

A．Anyone who wanted to build railroads could get some land.

B．Land grant colleges had land.

C．People moved to the new areas which had became states.

D．There were a lot of family farms after 1862.

Which of the following statements is NOT true according to the passage ______ .

A．accuracy in speed measurement is essential to spaceships

B．the speeds of space vehicles will vary greatly

C．inaccuracies in measurement could cause accidents in space missions

D．a bump could affect the preciseness of the laser-dopple radar

Which of the following statements is NOT true？

A．Retired people could only live on fixed incomes.

B．Retired people are more skillful than young people.

C．Young people are educated in the new technology.

D．Young people are keeping pace with rapid changes.

Which of the following statements is NOT true？

A．Retired people could only live on fixed incomes.

B．Retired people are more skillful than young people.

C．Young people are educated in the new technology.

D．Young people are keeping pace with rapid changes.

Which of the following statements is NOT true？

A．Retired people could only live on fixed incomes.

B．Retired people are more skillful than young people.

C．Young people are educated in the new technology.

D．Young people are keeping pace with rapid changes.

Which of the following statement is true？

A．42 volunteers were tested with both written and verbal jokes.

B．Only people with damage to the right anterior frontal lobe could not appreciate jokes.

C．Humorless people prefer silly slapstick humor.

D．The author had a humorless boss and a dour neighbor.

Which of the following statements about the volunteers in the experiment is NOT true？

A．The oldest volunteer was seventy years old.

B．They are tested with jokes both in written and spoken form.

C．The majority of the volunteers suffered from brain damage.

D．Comparatively people suffered from right anterior frontal lobe damage was most humorless.

According to the passage, which of the following statements is true？

A．Employees could work at home freely by using cell phones and telecommuting.

B．Employees could escape from work because they had telecommuting and cell phones.

C．Employees were controlled by their employers because of the telecommuting and cell phones.

D．Employees were called up by their employers for seven times within 24 hours.