Over thirty thousand years ago，people from northern Asia （亚洲北部） went to America．Today， we call these people Indians（印第安人）．

　　The Indians went to America because the weather began to change．Northern Asia became very cold. Everything froze. They had to move or die. How did the first Indians go to America? They walked！

　　Later Columbus found the New World in 1492．At first，only a few Europeans followed（跟随）．They travelled to America in boats． For the next three hundred years， about 500，000 people went there． Then the number grew very quickly. From 1815 to 1915，over thirty－two million Europeans left their countries and went to the United States． The biggest groups were from Germany and Italy（意大利）．These Europeans spoke many different languages．Most of them took almost no money．They went to America so that they could find a better life．　

小题1:__________ went to America first．

A．People from northern Asia

B．People from Europe

C．People from Germany

D．Columbus小题2:Why did the Indians go to America? Because __________．

A．northern Asia became very hot

B．northern Asia became very cold

C．they were interested in America

D．they liked travelling小题3:The New World was ___________．

A．Italy

B．northern Asia

C．Germany

D．America小题4:The first Europeans went to America _______________．

A．by ship

B．by bike

C．by boat

D．by train

患儿6个月，腹泻2天，每天大便10~20次，黄色稀水便。起病时呕吐较重，伴发热T38.2℃，轻咳，流涕。来诊前4个小时未排尿。体格检查：T37.4℃，P128次/分，体重5.8kg，精神萎靡，前囟及眼窝明显凹陷，咽赤，心、肺无异常。腹部平软，无包块，无固定压痛，皮肤弹性极差，肢冷。实验室检查：WBC6.7×10⁹/L，分类L62%P38%，大便常规：WBC0~2/HP，余正常。

补充该患儿的累计损失量，应选用下述哪种液体最合适（）

A.2：1等张含钠液

B.2/3张含钠溶液

C.1/3张含钠溶液

D.1/4张含钠溶液

E.1/5张含钠溶液