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问题 单项选择题

在双缝装置实验中，当入射单色光的波长减小时，屏幕上干涉条纹的变化情况是：（）

A.条纹变密并远离屏幕中心

B.条纹变密并靠近屏幕中心

C.条纹变宽并远离屏幕中心

D.条纹变宽并靠近屏幕中心

答案

参考答案：B

单项选择题

I was addressing and stamping envelops (信封) when I found there were no stamps left. "I have some in here," my daughter said as she reached for her Bible (圣经).
"It just shows that if you need help, turn to the Bible." I said.
"I also keep my household money (家用钱) in here," she replied. "It’s a good place to hide things. The ones who do open the Bible wouldn’t steal from it, and the ones who would steal never open it.\

According to the daughter, thieves wouldn’t steal things in the Bible.

A. Right.


B. Wrong.

C. Doesn’t say.
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单项选择题 A3/A4型题

女孩，30天，出生时发现两眼间、鼻根部逐渐增大的肿物，患儿眼距增宽，双眼斜视。

最有诊断意义的检查是以下哪一项()

A．穿刺

B．MRI

C．CT

D．B超

E．X线摄片
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