小肝癌的声像图表现是（）。 A.圆形，边界清楚，内回声略低可呈

搜题请搜索小程序“爱下问搜题”

问题单项选择题 B型题

小肝癌的声像图表现是（）。

A.圆形，边界清楚，内回声略低可呈不均匀的实性团块

B.强回声结节多见，周围见较宽的晕环，中心液化呈"牛眼征"

C.圆形或类圆形低回声结节，边界清楚，远侧回声可轻度增强，可见侧方声影

D.外周回声强，内呈网格状回声，边界清楚

E.肝内圆形或椭圆形无回声区，囊壁光滑，后方回声增强

答案

参考答案：C

阅读理解

Did you know that you can help the environment if you buy recyclable products instead of non-recyclable ones? Look for the recycle s 小题1: —— three arrows that make a circle – on the package. Recyclable products are usually made out of things that already have been u 小题2:. It usually takes less energy to make recycled products than to make new ones. The more energy we save, the b 小题3:.

Imagine that it's a hot summer day. You put an ice cream on the sidewalk, and it melts. W小题4: does this happen? Well, you probably know that the sun causes the ice cream to melt. But you may not know that the sun produces solar energy. Solar energy is a 小题5: way of saying "energy that comes from the sun." Solar energy can be used to heat homes, buildings, water, a 小题6:__ make electricity. Today, more than 200,000 houses in the United States make use of the s 小题7:energy.

　　Cars are an important part of life for most people. But cars also cause pollution and give out a lot of greenhouse gases into the air. L 小题8:, there are some cars that are better for the environment. These cars can travel longer on a smaller amount of gasoline. They don't p小题9: much, either. Using these kinds of cars can help reduce the amount of greenhouse gases in the air.

Many things, l 小题10: computers, TVs, stereos, and VCRs, have special labels on them. The label says "Energy" and has a picture of a star. Products with the ENERGY STAR® label are made to save energy. Buying products with ENERGY STAR® labels will help protect the environment.

查看答案

选择题

粉刷一间长5m，宽4m，高3m的房间，门窗面积是8m²，要粉刷的面积是（　　）m²．

查看答案