题目内容
When we're having a class, we'd better keep the room ________.
- A.close
- B.closed
- C.closing
- D.to close
Feeling lonely can make you sick. Doctors have long known that loneliness can cause many health problems and even death. What they didn’t know is 16 this feeling causes illness. A study in the online magazine Genome Biology 17 that loneliness actually influences the important part of our bodies—our genes.
In a small population of patients, researchers 18 more than 20,000 genes to compare how the genes of lonely and non-lonely individuals (个体) express themselves in molecular processes (分子过程) and in personal health. They found that gene expression is 19 in chronically (长期地) lonely people. “We now have a new way for understanding the relationship 20 social experience and physical health,” explains the study’s lead author, Steve Cole of University of California, Los Angeles.
“This study—the first to link (联系) 21 with gene changes—is special and exciting,” says Emma Adam, a professor of human development at Northwestern University. “It 22 in the black box.”
According to John Cacioppo, an author of the study from the University of Chicago, the
work suggests that loneliness is a warning 23 , much like physical pain. “This feeling is so bad because 24 of us wants to be forgotten; that’ s also what human means,” he says. “It makes us 25 for other people and want to be with friends when we’re lonely.”
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If we find a bird nest (巢), we will have a good place of watching and knowing about birds. Birds sit on eggs and take care of their babies from April to June. Because the baby birds are too young to leave the nest, parents often go to look for food and come back in several minutes. So it is good to watch birds. When we watch birds, we'd better hide ourselves in a close place to the nest, and it's better to use binoculars (双筒望远镜).
But how do we make a bird nest? A good bird nest must be very fine, strong, thick and comfortable. If you want to make one, please follow these:
a) Each nest must have six boards (木板) for its cover and floor, for its left and right sides, and for its front and back sides. Don't make the boards too slippery (滑的).
b) Dig a small hole in the front of the nest as a "door". The "door" is big enough so birds can fly in or out easily.
c) Make sure the rainwater can't go into the nest.
d) One piece of the board should be easy to open.
e) Don't forget to colour the nest.
【小题1】We need ______ near a bird nest if we want to watch and know about birds.
| A．a good place | B．some trees | C．to sit on eggs | D．to make a bird net |
| A．look after the birds more often | B．use the binoculars to catch the birds |
| C．hide ourselves to make the birds do everything as usual | D．catch the birds at last |
| A．we can clean the nest | B．birds can fly in or out |
| C．we can hang it | D．we can make it |
