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【单选题】
有关寄生虫对人体危害正确的描述A.
只在体内寄生引起寄生虫病。
B.
只有专性寄生虫才致寄生虫病。
C.
寄生于人体引起寄生虫病；作为虫媒病媒介来传播疾病。
D.
动物体内寄生虫任何情况下都不会感染人。
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举一反三
【单选题】Ireland is divided into two political parts as
A.
Northern Ireland and Southern Ireland.
B.
Southern Ireland and the Republic of Ireland.
C.
The Republic of Ireland and Northera Ireland.
D.
Northern Ireland and Britain.
【单选题】Ireland is divided into two political parts as
A.
Northern Ireland and Southern Ireland.
B.
Southern Ireland and the Repubiic of Ireland.
C.
The Republic of Ireland and Northern Ireland.
D.
Northern Ire[and and Britain.
【单选题】Ireland is divided into two political parts: _______ .
A.
Northern Ireland and southern Ireland
B.
Southern Ireland and the Republic of Ireland
C.
the Republic of Ireland and Northern Ireland
D.
Northern Ireland and Britain
【单选题】Ireland is divided into two political parts: _______.
A.
Northern Ireland and Southern Ireland
B.
Southern Ireland and the Republic of Ireland
C.
the Republic of Ireland and Northern Ireland
D.
Northern Ireland and Britain
【多选题】Ireland is divided into three geographical regions including______.
A.
the Wild Atlantic Way
B.
Ireland’s Hidden Heartlands
C.
Ireland’ Capital Area
D.
Ireland’s Ancient East
E.
Western Ireland
【多选题】In term of tourism, Ireland is divided into the following three geographical regions______.
A.
Ireland’s Hidden Heartlands
B.
Ireland’ Capital District
C.
The Wild Atlantic Way
D.
Ireland’s Ancient East
【单选题】video.mp4 Ireland is divided into two political parts: ( ) .
A.
Northern Ireland and Southern Ireland
B.
Southern Ireland and the Republic of Ireland
C.
The Republic of Ireland and Northern Ireland
D.
Northern Ireland and Britain
【单选题】地球上资源很丰富，是因为地球表面有四分之三的面积被水覆盖，地球上淡水资源又很不充裕，是因为地面淡水量不到总水量的1%，因而海水淡化问题已成为科学家研究的主要方向．若实行海水淡化作为饮用水，下列方法和原理完全不可能的是（ ）
A.
利用太阳能，使海水蒸馏淡化
B.
加明矾，使海水中的盐分沉淀并淡化
C.
将海水通过离子交换树脂，以除去所含的盐分
D.
利用半透膜，采用反渗透法使海水淡化
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