2.What is the expert's opinion of emojis?

A . 正确 B . 错误

A . However B . Otherwise C . Nevertheless D . Moreover

A . what B . whether C . how D . that

A .  single layer of firewalling B .  multiple layers of firewalling C .  firewall connections in either an active or standby state D .  an architecture in which all traffic between firewalls goes through application-specific server

A .  Connecting a host with MAC address 0000.0000.4147 will move interface FastEthernet0/2 into  error disabled state. B .  The host with address 0000.0000.4141 is removed from the secure address list after 5 seconds  of inactivity. C .  The sticky secure MAC addresses are treated as static secure MAC addresses after the  running configuration is saved to the startup configuration and the switch is restarted. D .  Interface FastEthernet0/2 is a voice VLAN port. E .  The host with address 0000.0000.000b is removed from the secure address list after 300  seconds.

A . trunk mode mismatches B . vlans that do not correspond to a unique IP subnet C . native vlan mismatches D . allowing only vlan 2 on the destination.

W: Good morning. M: All right, houses. Is it the time to buy or sell a house？ W: Well, actually, housing looks like it's going to be a bust. The housing sales for this month were down 1.7%. That's the second month in a row. And the markets headed for a correction or a drop in prices. And it's important to know that mortgage rates have been up, so that's one of the big reasons that it's slowing down buying. And on top of that the other big indicator mortgage applications are down. Actually last week mortgage applications hit a three-and-a-half-year low. So what does all this mean？ If you are a buyer, I think you are gonna find some bargains out there. M: Ok! It is puzzled to both then by the middle of the year you really find bargains. All right, your jobs, is this gonna be the year to look for a new job because they're gonna be available or is this a year in which more people again will get laid off. W: This is good news on the job front, in November 215,000 jobs were added, that's up from 44,000 in October. December looks good. Companies out there say they're planning to hire in the first quarter of this year and there are still jobs shortages in certain areas like finance, health care and construction. M: Great to get some optimistic news. All right, Mellody, thanks again and have a great weekend. (23) A．There will be a boom in housing. B．The house market will suffer depression. C．The bank will exert positive influence on housing. D．It will hit a three-and-a-half-year low.

A．stay B．preserve C．maintain D．reserve

A．Y B．N C．NG

A．that; where B．which; in which C．which; where D．that; in which

A．The increasing number of the full-time support staff. B．The reduction in the government funding for higher education. C．The rising inflation in the country. D．The increasing number of the students.

W: Thank you. M: Well, we hear it a lot in the news these days: "Recycle newspapers and save a tree. Collect bottles and cans so they can be reused in the manufacturing of new products." But how to promote the recycling movement？ Can you give us some suggestions？ W: I think there are three essential keys. M: What is the first one？ W: The first key is to have a more informed public, that is, to raise public awareness about the recycling process, to explain the kinds of materials that can be recycled, and provide ways on how to properly dispose of them. Local governments should educate the public on how to properly sort reusable materials from those, like waxed paper, carbon paper, plastic material such as fast food wrappers, that can't be recycled very easily. M: Then what is the second key？ W: The second is the development of improved technology. Technological progress has been made on many fronts, but governmental agencies need to step up their support for companies involved in recycling by providing tax incentives, low-cost loans, or even grants to upgrade equipment and to encourage further research. M: So what about the third essential key？ W: The final key is to develop a greater demand for recycled materials. This means increasing demand for the growing surplus of resources waiting to be recycled. M: Recycling is a crucial link protecting our planet. The three keys Mrs. Green mentioned are important ways to achieve this end. Thanks for joining us, Mrs. Green. W: You're welcome. (23) A．Keys to paper recycling. B．Importance of recycling. C．Keys to recycling improvement. D．Technological progress in recycling.

The motorcar will undoubtedly change significantly over the next 30 yearn. It should become smaller, safer, and more economical, and should not be powered by the gasoline engine. The car of the future should be far more pollution-free than present types. Regardless of its power source, the auto in the future will still be the main problem in mi)an traffic congestion. One proposed solution to this problem is the automated highway system. When the auto enters the highway system, a retractable arm will drop from the auto and make contact with a mil, which is similar to those powering subway trains electrically. Once attached to the rail, the car will become electrically powered from the system, and control of the vehicle will pass to a central computer. The computer will then monitor all of the car's movements. The driver will use a telephone to dial instructions about his destination into the system. The computer will calculate the best mute, and reserve space for the car an the way to the correct exit from the highway. The driver will then be free to relax and wait for the buzzer that win warn him of his coming exit. It is estimated that au automated highway will be able to handle 10,000 vehicles per hour, compared with the 1,500 to 2,000 vehicles that can be carried by a present-day highway. One significant improvement in the future car will probably be ______ A．its power source B．its driving system C．its monitoring system D．its seating capacity

A．1 B．2 C．3 D．4