覆盖义齿基托与覆盖基牙之间的间隙常规保留约（） A.0.5mm B.1mm C.1.

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In a memory – based competition between you and a chimp (猩猩); who do you think would win? If you put yourself on top, you might want to guess again.
In a test that challenged participants to remember numbers, a young chimp performed better than Japanese college students.
Here's how the test worked. At Kyoto University in Japan, human students and chimpanzee participants sat in front of a computer. Five numbers, ranging from 1 to 9, were combined with one another and then, they appeared at random places on the screen.
The numbers stayed on the screen for less than a second. In the first test, for example, participants saw the numbers for 650 milliseconds (about two- thirds of a second).
Then, each number disappeared and they saw a white square instead. Participants had to touch the squares in numerical order, based on the numbers that had been there a moment before.
In this test, the students touched the boxes in the correct order about 80 percent of the time. A young chimp named Ayumu performed equally well.
During a harder test, participants were only able to see the numbers for 210 milliseconds.
This time, students only succeeded in putting the boxes in the correct order about 40 percent of the time. But Ayumu still could select the boxes in the right order nearly 80 percent of the time.    
Some people have what's called a "photographic memory", which allows them to remember a surprising number of details after just a quick look at something. Ayumu's memory might work in a similar way, says lead researcher Tetsuro Matsuzawa.
The chimp's young age might have something to do with his impressive performance, too. In previous tests, the Japanese researchers found that young chimps performed better than their mothers.
The scientists are interested to see whether Ayumu loses his strong memory as he arrows older. They already know that young children sometimes have sharp memories when offered something photographical, but they lose this ability over time.

Topic	A memory-based competition between human beings and chimps
(小题1:) _______	To judge whose memory is better
The (小题2:)       of the first test	◆A chimp and some Japanese students participated in the (小题3:) _____ and sat before a computer. ◆Different combinations of five numbers appeared on the screen. ◆Each of the number was (小题4:)        by a white square.
The results of the second test	◆Students (小题5:)        to put the boxes in the right order about 40% of the time. ◆Ayumu got the right order (小题6:)       the time of the students
Conclusion	◆Some people have “photographic memory”, (小题7:)       some people to remember numbers after they 小题8:)         at something quickly. ◆The chimps have the similar (小题9:)       to human beings’. ◆Young children, just like chimps, have strong memory but they’ll lose it when they (小题10:)       .