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【单选题】
许多无机盐对于维持细胞和生物体的生命活动有重要作用。下列相关叙述正确的是A.
K + 参与血浆渗透压的形成，而 Na + 不参与
B.
Fe 2+ 在血红蛋白载氧过程中起重要作用
C.
过量摄入钠盐，将会导致血浆中的尿激素含量降低
D.
K+ 内流是神经纤维产生动作电位的主要原因
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举一反三
【单选题】The father will make ____ a bike ____. A. her, himself B. she, himself C. her, herself D. she, herself
A.
her himself
B.
she himself
C.
her herself
D.
she herself
【多选题】以下关于心电图正确的
A.
P波时间小于0.12秒
B.
QRS波群主波在aVR导联向下
C.
除aVR导联外,其他导联Q波振幅不超过同导联R波的1/4
D.
ST段下移不应超过0.05mV
【简答题】填一填，根据图画提示填单词。 1. Close your b_____________ . Please listen. 2. He has a new b_____________ , and there is a p_____________ in it. 3. My p_____________ are very cool. 4. Li Ming is a s_____________ . ...
【简答题】根据句意，用括号内所给单词的适当形式填空。小题1:Tom (drop) his schoolbag on the bus. He felt worri根据句意，用括号内所给单词的适当形式填空。 小题1:Tom ____(drop) his schoolbag on the bus. He felt worried. 小题2:My mother is looking forward to _...
【单选题】以下关于心电图正确的描述是:
A.
P波代表左、右心室的除极过程
B.
P波代表左、右心房的除极过程
C.
QRS波代表左、右心室的复极过程
D.
QRS波代表左、右心房的复极过程
E.
ST段代表左、右心室的除极和复极过程
【简答题】根据所听内容补填单词，完成短文。 A long time ___________, Hong was a ___________. He ___________ in China. He planted ___________ and __________ there. He had some __________ and __________. __________ day, he went t...
【单选题】Lily was 9 years old.____ was old enough to go to school ________. A. She ,she B. She ,herself C. Her, herself D. Her , she
A.
She ,she
B.
She ,herself
C.
Her, herself
D.
Her , she
【单选题】— Who taught _____ French? — Nobody, she learned all by _____. [ ]
A.
herself, her
B.
she, herself
C.
her, herself
D.
her,she
相关题目：
【多选题】以下关于心电图正确的
A.
P波时间小于0.12秒
B.
QRS波群主波在aVR导联向下
C.
除aVR导联外,其他导联Q波振幅不超过同导联R波的1/4
D.
ST段下移不应超过0.05mV