小李同学在帮助父母搬运蒜薹时发现,蒜薹堆的内部比较热,这些热量于
A:光合作用
B:呼吸作用
C:蒸腾作用
D:吸收作用
—Before he went on the stage,he took a deep ______ .
—He was too nervous.