Ren and Li are the two core thoughts of .

BENEFITS OF VIDEO CONFERENCING

Almost everyone is familiar with video conferencing today, and for good reasons.Video conferencing is convenient. Video conferencing saves money. Video conferencing makes money. And it is so much easier than it used to be.

Today, of course, video conferencing has become an important means for doing business.There is no longer a need to waste time and money traveling, and the advanced technology can offer what every conferencing needs.Audio, web and video together can provide good solutions for large conferences with Q&A sessionsand private chats.

Why is video conferencing so successful when other technologies have come and gone? It is because it’s convenient and cost-effective. In addition to saving time and money, video conferencing is a lot less stressful than a meeting after a day of airport security, delayed flights and hotel check-in, etc.

Best of all, video conferencing is not expensive nowadays. Web, video and audio conferencing service providers can quickly get you up and running, often without setup fees or high charges. With all that’s available today, the only question is whether a business can afford not to use user-friendly video conferencing.

1. It’s easy to use video conferencing in the past. {T; F}

2. Video conferencing is a convenient way for doing business. {T; F}

3. Only video can provide good solutions for large conferences with Q&A sessions.{T; F}

4. Compared to some other forms of meetings,video conferencing is muchmore stressful.{T; F}

5. Nowadays if you don’t use video conferencing in some cases, maybe your business will suffer losses to some degree. {T; F}

Germs and bacilli are not sources of diseases and they can be good to one's health.

A．Y

B．N

C．NG

As I viewed these once familiar surroundings, images of myself as a child there came to my mind.

Without ren, the rituals of li are like a rope, winding tighter and tighter around a person, making them uncomfortable.()

Every geologist is familiar with the erosion cycle. No sooner has an area of land been raised alive sea-level than it becomes subject to the erosive forces of nature. The rain beats down on the ground and washed【51】the finer particles, sweeping them into rivulets and then into rivers and out to sea. The frost freezes the rain water in cracks of the rocks and breaks【52】even the hardest of the constituents of the earth's crust. Blocks of rock dislodged at high levels are brought down by the force of gravity. Alternate heating and【53】of bare rock surfaces causes their disintegration. In the dry regions of the world the wind is a powerful force in removing material from one area to another. All this is natural. But nature has also provided certain defensive forces. Bare rock surfaces are in【54】course protected by soil itself dependent initially on the weathering of the rocks. Slowly【55】surely, different types of soil with differing "profiles" evolve the main types depending primarily on the climate. The protective soil covering, once it is formed, is held together by the growth of vegetation. Grass and herbaceous plants,【56】long, branching tenuous roots, hold firmly together the surface particles. The【57】is true with the forest cover. The heaviest tropical down- pours beating on the leave of the giant trees reach the ground only【58】spray, gently watering the surface layers and penetrating along the long passages provided by the roots to the lower levels of the soil. The soil, thus protected by grass, herb, or trees, furnishes a quiet habitat for a myriad varied organisms-earth-worms that importantly modify the soil, bacteria, active in their work of converting【59】leaves and decaying vegetation into humus and food for the growing plants. Chemical action is constantly taking【60】. Soil acids attack mineral particles and salts in solution move from one layer in the soil to another.

(51)

A) unconscious

B) unaware

C) unfamiliar

D) unknown

A. similiar

B. long

C. different

D. short

A．identical

B．similar

C．different

D．unfamiliar