() is a principle of scientific method, based on the belief that the only things valid enough to confirm or refute a scientific theory are interpersonally observable phenomena, rather than people’s introspections or intuitions.

单项选择题The passage is a description of the rural area around the town of St Ogg’s and the river Floss. What kind of role does this description play().

A. The description arouses readers’ certain expectations.
B. The description leads readers to the heroine, who is the little girl standing on the bank of the river.
C. With the description, the narrator reminisces about a February many years ago and begins to tell the story.
D. With the description, the narrator expresses his nostalgic look back decades ago.

单项选择题We can infer from the passage that the golden cohort ().

A. will lead the way to lower mortality until 2020
B. will decline in death rates by 2010
C. will not suspend the quick mortality reductions until 2040
D. None of the above

单项选择题What does the host speaker think about those suggestions().

A. The host speaker shows disapproval towards them.
B. The host speaker hesitates in taking them.
C. The host speaker is not confident that they will work.
D. The host speaker holds that they make no sense.

单项选择题In the fifth paragraph, the new research suggests that the ’revolution’ was actually carried out by many hands across a huge area and over thousands of years. What does it mean().

A. Many people in vast areas over a long period of time devoted themselves to the revolution.
B. It is a universal truth that revolution costs time and fife.
C. The development in human history from scattered tribes to concentrated villages didn’t result from natural causes.
D. It is a universal truth that revolution’s success comes from more power from more people.

单项选择题What is the trick with shop now, save later ().

A. The stores are playing games with numbers.
B. The stores want to have customers back.
C. The stores wish to sell more goods at a thinner profit.
D. The stores wish to secure the present deals.