下列哪一因素最能引起肺泡-动脉二氧化碳分压差增大()。
A.缺氧
B.吸入纯氧
C.肺泡死腔量增加
D.潮气量过大
E.分钟通气量不足
参考答案:C
根据句意,用括号中所给词的适当形式填空,并将答案写在答题卡(答题卷)的相应位置上。(共5小题:每小题1分,满分5分)
小题1:The _______ China—South Asia EXPO opened in Kunming on June 6, 2013. (one)
小题2:After coming back from the storm, she felt she was not ________. (she)
小题3:No matter what difficult problems we meet, please face them _________. (brave)
小题4:In life, you’ll get what you put in. you have two _______, one to help yourself and the other to help those around you. (hand)
小题5:We are very _______ that a student from our school has won the prize. (pride)
从以下诗句中选择三句,依次填入下面语段的横线上最准确的一项是 [ ]
①山寺桃花始盛开
②千叶桃花胜百花
③红杏枝头春意闹
④人面桃花相映红
更让人高兴的,是大片大片的桃花开了。古诗云:“_____________。”但桃花大片大片开时,好像才能切中“争先恐后”的核心。“_____________”,这是偏爱桃花者的感慨:而“_____________”,却几乎是最引人遐恩的春风图了。桃花开的时候,地丁、蒲公英、荠菜等相继开放,灼灼的、灿烂的花潮也真正降临大地了。
A.③②④
B.③①②
C.④①③
D.④③①