Stressful job conditions or stressors are different from an individual's reactions or strains.
Stressful job conditions or stressors are different from an individual's reactions or strains.
She failed to _____________ the stresses and strains of public life.
She failed to _____________ the stresses and strains of public life.
New strains of viruses are transmitted to man by_____.
New strains of viruses are transmitted to man by_____.
Strains of a flu may also be named based on which of the following?
Strains of a flu may also be named based on which of the following?
As influenza is caused by a variety of species and strains of viruses, in any given year some strains can die out while others create (1), while yet another strain can cause a (2).
As influenza is caused by a variety of species and strains of viruses, in any given year some strains can die out while others create (1), while yet another strain can cause a (2).
According to the passage, a great variety of influenza strains can appear when_____.
According to the passage, a great variety of influenza strains can appear when_____.
Compared with data from Asia, the _______ of 3.1% of strains (菌株) we detected is low.
Compared with data from Asia, the _______ of 3.1% of strains (菌株) we detected is low.
More than 5,000 different strains of the influenza virus have been sequenced.
More than 5,000 different strains of the influenza virus have been sequenced.
Some strains of bacteria are so harmful that a tiny few can have deadly _______.
Some strains of bacteria are so harmful that a tiny few can have deadly _______.
It can be inferred from the passage that all of the following are ways of producing new strains of influenza viruses EXCEPT _____.
It can be inferred from the passage that all of the following are ways of producing new strains of influenza viruses EXCEPT _____.