离散控制器

检测包涵体可作为（）

A.衡量病毒毒力强弱的标准

B.病毒在细胞内增殖的标志之一

C.诊断流行性乙型脑炎病毒感染

D.鉴定病毒的特异性依据

E.测定病毒数量的指标

现在的“空巢家庭”太多，老年人的生活十分孤独。

A．疲劳

B．困难

C．独立

D．寂寞

V3～V5导联出现心肌梗死图形见于何处病变（）。

A.正后壁

B.局限前壁

C.下壁

D.高侧壁

E.广泛前壁

阅读理解。

     Can you believe your eyes? A recent experiment suggests that the answer to that question may depend

on your age.

     Martin Doherty, a psychologist at the University of Stirling in Scotland, led the team of scientists. In this

experiment, Doherty and his team tested the perception (观察力) of some people, using pictures of some

orange circles. The researchers showed the same pictures to two groups of people. The first group included

151 children aged 4 to 10, and the second group included 24 adults aged 18 to 25.

     The first group of pictures showed two circles alone on a white background. One of the circles was larger

than the other, and these people were asked to identify the larger one. Four-year-olds identified the correct

circle 79 percent of the time. Adults identified the correct circle 95 percent of the time.

     Next, both groups were shown a picture where the orange circles, again of different sizes, were surrounded

by gray circles. Here's where the trick lies in. In some of the pictures, the smaller orange circle was surrounded

by even smaller gray circles-making the orange circle appear larger than the other orange circle, which was

the real larger one. And the larger orange circle was surrounded by even bigger gray circles-so it appeared to

be smaller than the real smaller orange circle.

     When young children aged 4 to 6 looked at these tricky pictures, they weren't fooled-they were still able

to find the bigger circle with roughly the same accuracy as before. Older children and adults, on the other

hand, did not do as well. Older children often identified the smaller circle as the larger one, and adults got it

wrong most of the time.

     As children get older, Doherty said, their brains may develop the ability to identify visual context. In other

words, they will begin to process the whole picture at once: the tricky gray circles, as well as the orange

circle in the middle. As a result, they're more likely to fall for this kind of visual trick.

1. Doherty and his team of scientists did an experiment to evaluate _____. [ ]

A. children's and adults' eye-sight

B. people's ability to see accurately

C. children's and adults' brains

D. the influence of people's age

2. When asked to find the larger circle, _____. [ ]

A. children at 6 got it wrong 79% of the time with no gray ones around

B. only adults over 18 got it right 95% 0f the time with gray ones around

C. children at 4 got it right about 79% of the time with gray ones around

D. adults got it right most of the time with gray ones around

3. According to the passage, we can know that _____. [ ]

A. a smaller orange circle appears bigger on a white background

B. an orange circle appears bigger than a gray one of the same size

C. a circle surrounded by other circles looks bigger than its real size

D. a circle surrounded by bigger ones looks smaller than its real size

4. Visual context may work when children get older than _____. [ ]

A. 4

B. 6

C. 10

D. 18

5. Why are younger children not fooled? [ ]

A. Because they are smarter than older children and adults.

B. Because older people are influenced by their experience.

C. Because people's eyes become weaker as they grow older.

D. Because their brain can hardly notice related things together.

彩色钝化膜的保护性能比白色钝化膜的保护性能好。