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问题 单项选择题

下列哪一项对诊断胎儿脊柱裂最有帮助？（）

A.胎儿脑积水

B.中孕早期胎儿颅骨环呈"柠檬征"

C.脊椎管呈封闭的环状强回声

D.脊椎完整

E.羊水多

答案

参考答案：B

选择题

_______ they may have, the CEO of the corporation calls on all the staff to gather their courage to strive it.

A．What a serious problem

B．However a serious problem

C．How serious a problem

D．Whatever a serious problem
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选择题

The Da Vinci Code is _____ that many people go to see it. [ ]

A. too interesting

B. so a interesting film

C. such an interesting film

D. such interesting a film

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