74．The passage indicates that, in comparison to radio waves, gamma waves 　　　.

　　　 A．produce louder sound　　　　　　　　　　　　　 B．are less magnetic

　　　 C．do not form in the sun’s center　　　　　　　 D．are not so long

73．What does the passage mainly discuss?

　　　 A．The production of solar light and heat.

　　　 B．The physical and chemical nature of life.

　　　 C．The conversion of hydrogen to helium.

　　　 D．Radiation in the X-ray part of the spectrum.

72．The best title for this passage is 　　　　.

　　　 A．Tariff Cut Boosts Trade

　　　 B．Best Ways To Sell Fruits

　　　 C．Tropical Fruit To China

　　　 D．China Joins ASEAN

E

A summary of the physical and chemical nature of life must begin, not on the earth but in the sun; in fact, at the sun’s very center. It is here that is to be found the source of the energy that the sun constantly pours out into space as light and heat. This energy is liberated at the center of the sun as billions upon billions of nuclei hydrogen atoms clash with each other and fuse together to form nuclei of atoms. The output of light and heat of the sun requires that some 600 million tons of hydrogen be converted into helium(氦) in the sun every second. Thus the sun has been doing for several thousands of millions of years.

The nuclear energy is released at the sun’s center as high-energy gamma radiation, a form of electromagnetic(电磁的) radiation like light and radio waves, only of very much shorter wavelength. This gamma radiation is absorbed by atoms inside the sun, to be remitted at slightly longer wavelengths. This radiation in its turn, is absorbed and remitted. As the energy filters through the layers of solar inner, it passes through the X-ray part of the spectrum(光), eventually becoming light. At this stage, it has reached what we call the solar surface, and can escape into space, without being absorbed further by solar atoms. A very small fraction of the sun’s light and heat is given off in such direction that, after passing unhindered through interplanetary space, it hits the earth.

71．We can infer from the story that 　　　　.

　　　 A．China lacks fruit

　　　 B．tariffs are an important factor in foreign trade

　　　 C．tropical countries have cheaper fruit

　　　 D．China prefers to trade with ASEAN countries

70．Which of the following statements about the agreement is NOT true?

　　　 A．It will result in an increase in trade between China and ASEAN countries.

　　　 B．In might cause the prices of ASEAN products to fall.

　　　 C．It may greatly benefit the Chinese customers.

　　　 D．It won’t bring any benefits to producers of ASEAN countries.

69．A tariff is money paid 　　　　　.

　　　 A．when buying goods

　　　 B．to sell or buy products of foreign brand names

　　　 C．to sell or buy goods across the border of the country

　　　 D．to go through the customs

68．From the passage we can know that 　　　　.

　　　 A．customers are not satisfied with CBC

　　　 B．sometimes CBC sells more tickets than its plane’s fixed seats

　　　 C．CBC has more than twenty planes which fly to all the capital cities of the world

　　　 D．customers can only buy tickets with ready money

D

Beijing’s markets will soon be flooded with more and cheaper colourful fruit such as orange mangos and green durian (榴莲) all year round.

Thanks to a new free trade agreement signed last Monday between China and the Association of Southeast Asian Nations(ASEAN)， more and more tropical Southeast Asian fruit will enter the country.

The agreement means that from July 1,2005, China and ASEAN countries will begin to cut tariffs. There are about 7,000 products included in the cuts.

As global communication develops, countries are trading more and more goods with each other. When products are sold across national borders, countries put a tax on them. This type of tax is called a tariff.

Just like removing an obstacle from the path of these goods, the reduction of tariffs will encourage trade between China and ASEAN countries. It means more products and lower prices.

The agreement will bring real benefits for Chinese customers, said a Chinese Foreign Ministry spokesman. “In the Beijing markets you will easily find more tropical fruit like durian, which used to very, very, very expensive. Now they will be cheaper.” The current tariff rate on durian is 22 per cent but will fall to zero in 2005.

In the first 10 months of this year China did US＄84.6 billion of trade with ASEAN countries. Experts believe this may reach US＄100 billion next year.

Founded in 1967, ASEAN now includes Indonesia, Malaysia, Singapore, the Philippines, Thailand, Brunei, Viet Nam, Myanmar, Cambodia and Laos.

67．Which of the following statements can be inferred from the table?

　　　 a.In 2003 and in 2004, complaints about Flight problem, Baggage, and Customer service together took about 50 percent of all consumer complaints received by the CBC Company.

　　　 b.The number of Special passengers complaints was unchanged from 2003 to 2004.

　　　 c.From 2003 to 2004 the number of Flight problem complaints increased by more than 2 percent.

　　　 A．only a　　　　　　　　 B．only b　　　　　　　　 C．a and b　　　　　　　　 D．a and c

65．By about what percent did the total number of complaints decrease from 2003 to 2004?

　　　 A．40%　　　　　　　　　 B．60%　　　　　　　　　 C．75%　　　　　　　　　 D．100%

　 66．If the circle graphs below show total consumer complaints for 2003, which graph shows a dark part that is about Flight problems and Refund problems together?