A. administered B. bumpy C. declared D. extremely AB. issue AC. limited AD. mass BC. minimize BD. pace CD. rarely ABC. received |
Challenges Ahead With Vaccines Rolled Out
Less than a year after the World Health Organization
On December 14, the Pfizer/BioNTech COVID - 19 vaccine made its debut in the United States.
“It signifies hope, healing, restoration of public health and public safety,” said Sarah Lindsay, a nurse in New York who
But that road has proved to be
“If the
Globally, nine vaccines, including four from China, have been approved for either widespread or
“It’s really important that we do everything that we can to
A. diagnostic | B. respectively | C. improve | D. update | E. accurately | F. presented |
G. practice | H. distinct | I. combined | J. standard | K. disclose |
A new study by a team of Stanford University School suggests that the average human body temperature in USA has decreased over the last century. The idea that the normal human body temperature is about 37°C was first
However, it turns out that this well-established fact is not completely correct– or, to put it more
The team looked at three
By cross-checking the health records, the researchers concluded that the average American’s body temperature is about 0.03°C and 0.6°C lower for women and men,
As for the reasons, the researchers say that the most likely one is a decline in the human metabolic rate (人体代谢速率) due to environmental factors. One possibility is that improvements in public health have reduced the incidence of inflammations (炎症感染率), which