What has the research found?

In this section, you will hear five short news items.
Each item will be read only once.
After each item, there will be a fifteen-second pause.
During the pause, read the question and the four choices marked A， B， C and D, and decide which is the best answer.
Then mark the corresponding letter on the answer sheet with a single line through the centre.
16. According to Business Insider, “Research suggests cats mirror our behaviour and mood. If you’re anxious, this could mean your cat is more fearful and overweight. People with dark personality traits are also more likely to have cats who bully others.” Many have theorized that this occurs because they are surprisingly aware of humans’ emotions. Cats pick up on emotional gestures.
17. A growing number of Earth’s insect populations now exist only in collections in museums. A new review of over 70 studies of insect populations suggests that human pressures are causing insect populations to decrease by as much as a quarter every decade. Their collapse is being driven by human activities, everything from traffic to industrial farming and pesticides to light pollution.
18. According to CNN.com, “Childhood obesity continues to rise around the world,” and the World Health Organization has called it “one of the most serious public health challenges of the 21st century.” A university assistant professor in New York who has studied childhood obesity on a global scale, wanted to clarify： “There are still more children that are underweight in the world than there are obese, but that’s likely to change pretty soon.”
19. To recruit more American students in STEM fields, the White House five-year strategic plan tries to remove social and financial barriers to a rewarding education and technical fields. University of District of Columbia’s Engineering School’s Dean believes many students avoid STEM because they think they have better options. They see opportunities in sports, philosophy or history or arts. Some experts believe that to compete with countries like China and India, the country needs to encourage STEM education at young age.
20. China will take a host of measures to boost development of traditional Chinese medicine (TCM), according to a statement issued by the National Administration of Traditional Chinese Medicine. The administration vowed to further regulate TCM health care services, and to greatly improve the capacity and system of technological innovation in TCM. Efforts will also be made to further standardize the TCM industry and expedite the fourth national survey on medicinal resources in the country. Standards should be worked out for establishing overseas TCM centres, so as to expand foreign exchanges and co-operation in TCM.