The earth is not the only body that travels around the sun. With it are eight other planets, fellow members of the sun's family. Two of them, Mercury and Venus, are nearer while the other six, namely Mars, Jupiter, Saturn, Uranus, Neptune and Pluto, also in their given order from the sun, are farther from the sun than the earth is. The farther they are, the longer trips they make around the sun. People noticed long ago that these traveling bodies moved around in the sky in definite paths. It is a force called gravity that holds them in their paths. We know that every little bit of matter in the universe pulls upon every other bit of matter. The pull between two bodies is proportional to the product of their masses. Because the sun is so large the pull between the sun and the planets are thus great. If it were not for this pull, the planets would fly off into space. In the same way there exists a pull between the earth and the moon, which keeps the moon traveling in its orbit around our planet, the earth. Gravity holds you to its surface, and pulls back to it the ball which you throw into the air. Of course the ball also pulls on the larger earth but the earth is so much larger that the pull is not noticed. Now remember that large bodies exert a greater pull than smaller ones which contain less material. But each object in the universe, no matter how small, pulls on all other objects to some degree. There are _ that travel around the sun in the sun's family. A) nine planets B) eight planets C) one star and ten planets D) the earth and the sun
A
First direct coal liquefaction line produces (Xinhua) HOHHOT - China's first direct coal-to-oil project, operated by the country's leading coal producer, Shenhua Group, produced 866,000 tons of oil products last year. The direct coal liquefaction line is located in Ejin Horo Banner , Ordos city, North China's Inner Mongolia autonomous region. It produces 3,000 tons of oil products by using nearly 10,000 tons of coal per day, said Shenhua Coal Liquefaction and Chemical Co.,Ltd. With an investment of 12.6 billion yuan ($2.06 billion), Shenhua Group began construction of the project in 2004, using self-developed technologies. The project began trial production at the end of 2009 with a designed annual capacity of 1.08 million tons of diesel , naphtha and liquefied petroleum gas . Proven coal reserves around Ordos are estimated at 160 billion tons, or 11.4 percent of the country's total coal reserves. As part of its clean energy strategy, China has begun a number of direct or indirect coal liquefaction and coal gasification projects in Inner Mongolia, Shaanxi, Ningxia, Xinjiang and Liaoning in the past three years. Which of the following is TRUE according to the passage? A) Shenhua Group began construction of the project in 2009. B) The project produces 866,000 tons of oil products every year. C) It produces 3,000 tons of oil products with nearly 100,000 tons of coal per day. D) The project can produce 1.08 million tons of diesel, naphtha and liquefied petroleum gas every year according to design.
D
Q: When I was a kid, my siblings and I used to have ice cream for dessert.Every day, we would choose which ice cream flavor to have, whether to eat it in a cone or a bowl. Then we would happily wolf down our treat as fast as we could. Once, though, when I was probably about 10 0r 11, our grandpa came to visit. Grandpa always had a unique view on things. On this particular occasion, my sister and I were making bets as to who could finish their ice cream first. With a smile, Grandpa said, "Why would you want to finish first? If you eat slowly, it will last longer. You should have acompetition to see who can finish last." Even now, I always try to taste my ice cream, but of course this is about more than just dessert. Too often, kids want to scramble for more, whether it's more ice cream, more toys, or more friends. This habit persists into our adult years, and we end up constantly scrambling for more. We never develop the skill of appreciating what we have. If we learn to recognize this pattern and change it, we can raise our kids a little differently, giving them the tool of tasting their proverbial dessert, which could lead to a happier life for them. What my grandpa taught me that day was really that if you take the opportunity to enjoy what's in front of you, the pleasure will last longer and be more rewarding than if you rush through life always trying to get the next treat. It's a lesson that, I think, has made my adult life happier, as well. These days, when I want something, I wait as long as I can before I allow myself to have it. Then, when I finally get it, I make sure to treasure it as long as possible, because I know that, no matter what it is, it will be gone all too soon. The author's grandfather advised her sister and her to _ . A) eat ice cream as slowly as possible B) stop eating ice cream C) stop the competition between them D) learn something from their way of eating
A: A
They may be just passing your office, computer bag slung over one shoulder. Or they may be sitting in a car outside it, causally tapping away at a laptop. They look like innocent passers-by. In fact, they are stealing your corporate secrets. Drive-by hacking is the trendy term given to the practice of breaking into wireless computer networks from outside the buildings that house them. A recent study in the UK, sponsored by RSA Data Security, found that two-thirds of organizations with wireless networks were risking their data in this way. Security experts patrolled several streets in the City of London seeking evidence of wireless networks in operation. Of 124 that they identified, 83 were sending data without encrypting them. Such data could readily be picked up by a passer-by armed only with a portable computer, a wireless modem and a few pieces of software that can be freely downloaded from the Internet. The data could include sensitive company documents containing valuable information. Or they could be e-mail identities and passwords that could be used by hackers to log into corporate networks as if they were legal users. Most companies using wireless networking technology do not take even the simplest of measures to protect their data. Nearly all wireless network technology comes with some basic security features that need only to be activated in order to give a minimum level of security, for example, by encrypting the data being passed over the network. Raymon Kruck, business development manager at Check Point Software, a security technology specialist, believes this could be partly a psychological problem. People see the solid walls of their building as safeguards and forget that wireless networks can extend up to 200 meters beyond physical walls. Companies without any security at all on their wireless networks make it ridiculously easy for hackers to break in. Switching on the security that comes with the network technology should be automatic. Then there are other basic steps a company can... The passage is most likely to be seen in a _ A) book review B) science fiction C) textbook D) computer magazine
D