or perhaps because the aircraft had already (3) _________ its weight allowance.

Which of the following is NOT the benefit of canoeing according to the passage?

According to the passage, why is it so hard to avoid sugar?

However, the researchers say the study is ________ (5) and therefore cannot establish a definite cause.

According to paragraph 2, what does intermittent fasting involve?

It can be inferred from the passage that foods in restaurants are often __________ .

According to paragraph 3, what is the most decisive information obtained from the experiment?

The phrase “beef up” in the last paragraph mostly means ___________.

According to paragraph 2, what approach did the scientists take to uncover the genetic mystery?

The word “validating” in paragraph 4 is closest in meaning to ______.

According to paragraph 3, how can practicing intermittent fasting benefit a person’s health?

According to the last paragraph, the elderly should do some exercise that ___________.

What is the writer’s main purpose in writing this text?

What is this passage mainly about?