问题
单项选择题
关于羊水的描述，错误的是（）。
A.妊娠早期羊水主要来自母体血清经胎膜进入羊膜腔的透析液
B.妊娠中期起羊水来自胎儿尿液
C.羊水最大深度≤3cm，羊水指数≤5cm诊断为羊水过少
D.胎儿中枢神经系统畸形常合并羊水过多
E.胎儿消化系统畸形常合并羊水过少
答案
参考答案：E
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关于羊水的描述，错误的是（）。
A.妊娠早期羊水主要来自母体血清经胎膜进入羊膜腔的透析液
B.妊娠中期起羊水来自胎儿尿液
C.羊水最大深度≤3cm，羊水指数≤5cm诊断为羊水过少
D.胎儿中枢神经系统畸形常合并羊水过多
E.胎儿消化系统畸形常合并羊水过少
参考答案：E
读下面一篇文章，根据文中信息完成所给表格，每空不超过三个单词。 People in the United States honor their parents with two special days: Mother’s Day, on the second Sunday in May, and Father’s Day, on the third Sunday in June. These days are set aside to show love and respect for parents. They raise their children and educate them to be responsible citizens. They give love and care. These two days offer a chance to think about the changing roles of mothers and fathers. More mothers now work outside the home. More fathers must help with child-care. These two special days are celebrated in many different ways. On Mother’s Day people wear carnations. A. red one stands for a living mother. A. white one shows that the mother is dead. Many people attend religious services（宗教仪式）to honor parents. It is also a day when people whose parents are dead visit their graves. On these days, families get together at home and in restaurants. They often have outdoor BBQs for Father’s Day. These are days of fun and good feelings and memories. Another tradition is to give cards and gifts. Children make them in school. Many people make their own presents. These are valued more than the ones bought in stores. It is not the value of the gift that is important, but it is “the thought that counts”. Greeting card stores, florists, candy makers, bakeries, telephones companies and other stores do a lot of business during these holidays. 1.
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