皮皮学，免费搜题
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【单选题】
抗原与抗体结合发生交叉反应是因为A.
抗原与抗体形状相似
B.
抗原与抗体比例合适
C.
抗原和抗体的大小相近
D.
不同抗原具有相同或相似抗原决定簇
E.
抗体为多聚体
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皮皮学刷刷变学霸
举一反三
【单选题】The______paragraphs want rewriting.
A.
one fifth
B.
first one
C.
first four
D.
two-thirds
【简答题】初产妇，23岁，孕37周顺产分娩一女婴，体重2600g，Apgar评分1分钟10分，5分钟10分，胎盘胎膜自娩完整，产程经过顺利。产后母婴安全返回病房，护理体检：产妇体温正常，子宫收缩好，宫底脐下1指，质硬，无压痛，恶露少，暗红色，外阴无水肿，乳汁分泌少。产褥期生殖系统变化最大的器官是( )A、输卵管 B、卵巢 C、子宫 D、盆底组织 E、阴道 F、外阴 子宫复旧的主要表现有( )A、子宫体肌纤维...
【单选题】How many pages has Jane read?
A.
Two-thirds of the book.
B.
Half of the book.
C.
One-third of the book.
【单选题】______ of that country _______ by snow.
A.
Second thirds; is covered
B.
Two thirds; is covered
C.
Two thirds; are covered
D.
Two third; covers
【单选题】______ is less than __________. A. One-third, two-thirds B. One-third , two-third C. First-three , First-threes D. One-third , one-three
A.
One-third, two-thirds
B.
One-third , two-third
C.
First-three , First-threes
D.
One-third , one-three
【单选题】What happens to a person if he loses _____ of his blood (血)? [ ]
A.
three fourth
B.
one thirds
C.
two third
D.
two thirds
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