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【单选题】
下列叙述中( )是正确的。A.
反病毒软件通常滞后于计算机新病毒的出现
B.
反病毒软件总是超前于病毒的出现，以查、杀任何种类的病毒
C.
感染计算机病毒的计算机具有对该病毒的免疫性
D.
计算机病毒会危害计算机用户的健康
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【单选题】各种方案所需的条件已知且每一方案各种后果发生概率的决策是（ ）A、非程序化决策 B、确定型决策 C、风险型决策 D、不确定型决策
A.
、非程序化决策
B.
、确定型决策
C.
、风险型决策
D.
、不确定型决策
【单选题】Inhalation of air into the lungs is correctly described by which of the following?
A.
the action of the diaphragm and the ribs create a positive pressure in the thoracic cavity which causes air to move into the lungs.
B.
the volume of the thoracic cavity is increased as muscles relax, thus increasing the pressure and air is forced into the lungs.
C.
the thoracic cavity decreases in volume as muscles relax and pressure decreases so external air is forced into the lungs.
D.
the lungs expand as muscles contract, this creates a negative pressure so air is forced into the lungs.
【单选题】–Did you hear of the news the president is coming to visit our school? –Yes, but it is not true.
A.
that
B.
when
C.
who
D.
which
【单选题】How do the lungs contribute to thermoregulation?
A.
The lungs contain water that cool the surrounding organs
B.
The lungs create heat through catabolic reactions involving ATP within the alveoli
C.
The lungs expel excess body heat during exhalation
D.
The lungs do not play a role in thermoregulation
【单选题】When children stop growing, ______.
A.
their lungs will get stronger
B.
their lungs' development stops
C.
they will develop lung problems
D.
they will suffer from colds or asthma
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