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问题 选择题

南北半球的分界线是什么？

A本初子午线    B 180度经线   C 赤道（0度纬线）  D 西经20度经线

答案

答案：C

地球上的0度经线称为本初子午线，东经180°和西经180°称为180°经线，西经20°和东经160°的经线圈为东西半球的分界线，赤道为南北半球的分界线。故本题选C。

句型转换

句型转换。

小题1:The boy has been to the U.S.A. twice.（对画线部分提问）

How ___________ ___________ has the boy been to the U.S.A.?

小题2:Mom felt tired after she cooked for the whole family.（改为简单句）

Mom felt tired after ___________ for the whole family.

小题3:Mr. Brown and his wife have been married for 20 years. （改为同义句）

Mr. Brown and his wife ___________ ___________ 20 years ago.

小题4:Lisa didn’t hang out with her friends yesterday. （改为肯定句）

Lisa ___________ out with her friends yesterday.

小题5:Some reporters are interviewing a government official on traffic problems now.（改为被动语态）

A government official is _________ _________ by some reporters on traffic problems now.
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单项选择题

骨盆测量.骶耻外径20cm，髂嵴间径26cm，坐骨棘间径8.5cm，坐骨结节间径7.5cm，耻骨弓＜90°，此骨盆形态最可能属于（）。

A.漏斗骨盆

B.均小骨盆

C.单纯扁平骨盆

D.佝偻病性扁平骨盆

E.横径狭窄骨盆
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